45 results about "Metal sound" patented technology

The invention discloses a liquid metal acoustic sensing fiber and a preparation method thereof.The sensing fiber is of a skin-core structure and comprises a skin layer and a core layer, the skin layer comprises a polyurethane elastomer, and the core layer comprises a conductive composite layer composed of liquid metal, nano-silver, carbon nanotubes and the polyurethane elastomer; wherein the conductive particles are liquid metal, nano silver and carbon nanotubes. The skin-core structure acoustic sensing fiber is prepared through the liquid metal, nano-silver and carbon nanotube composite conductive material and a coaxial wet spinning process, the skin-core structure acoustic sensing fiber is excellent in conductivity, stretchable, good in acoustic response performance and sensitive to sound waves of different frequencies, the preparation process is simple, large-scale production is easy, the cost is low, and the material is resistant to electromagnetic interference and high in environmental adaptability.

The utility model belongs to the technical field of sound barriers, and particularly relates to a composite nonmetal sound barrier unit plate. The non-metal sound barrier unit plate comprises a back plate formed by pouring concrete and a face plate made of ceramic particle sound absorption materials, the back plate and the face plate are connected through a damping deformation layer, and the face plate can float relative to the back plate in a damping mode after being impacted by a load. The sound absorption panel of the non-metal sound barrier unit plate can perform damping floating relative to the back plate, so that the non-metal sound barrier unit plate is more impact-resistant and fatigue-resistant, and has the characteristics of high structural strength, lasting vibration and noise reduction effects and long service life.

This disclosure relates generally to electronic musical instruments, systems, and methods. More particularly, this disclosure relates to electronic percussion instruments such as tom toms, snare drums, bass drums, cymbals, and hi-hats, and assemblies of instruments (e.g., percussion instruments), such as drum sets. Even more particularly, this disclosure relates to wireless electronic percussion instruments, and percussion instruments with interchangeable and / or removable components to change the instrument between a traditional percussion instrument (that relies on resonance and / or vibration to produce sound) and an electronic percussion instrument. The present disclosure also relates to electronic cymbal instruments, such as cymbal assemblies and hi-hat assemblies, that can be used in conjunction with a traditional acoustic metal cymbal.

The invention relates to the technical field of layered polymer composite materials, and discloses a layered composite noise reduction material for a sound barrier and a preparation method of the layered composite noise reduction material, and the noise reduction material is of an integrated composite structure with a functional skin and a sound absorption core material; the functional skin is prepared by reacting a first premix containing first polyether polyol, aliphatic polyol modified polyether amine and phosphate polyol; the sound absorption core material is prepared by reacting a second premix containing second polyether polyol and epoxy-terminated polysiloxane; according to the preparation method, an integrated forming process is adopted, the first premix is applied into a mold, and when the first premix reaches a gel state but is not completely cured, the second premix is injected to be jointly cured and formed; the problem of interlayer separation is solved, the aliphatic polyol modified polyether amine endows the skin with excellent toughness and weather resistance, the epoxy-terminated polysiloxane ensures the high aperture ratio and sound absorption performance of the core material, and the material is stable in structure, balanced in performance and suitable for the fields of metal sound barriers and the like.

The utility model discloses an I-type unit plate of a plugboard type metal sound barrier, and relates to the field of sound shielding. Comprising two main beam profiles which are symmetrically arranged up and down; the multiple middle keels are sequentially and fixedly connected between the two main beam profiles in parallel, round through holes are formed in the middle keels, and the ends of the round through holes can be fixedly connected with the corresponding main beam profiles; the sound absorption assembly is arranged in a mounting area formed by the middle keel and the main beam profile; the face and back plate assemblies are arranged on the front side and the rear side of the sound absorption assembly, the upper ends and the lower ends of the face and back plate assemblies are fixedly connected with the corresponding main beam sectional materials respectively, and ethylene-propylene-diene monomer foaming rubber strips are arranged between the face and back plate assemblies and the main beam sectional materials. The end sealing heads are symmetrically fixed to the left side and the right side of the face back plate assembly, and the suspension inhaul cables can penetrate through cavities between the end sealing heads and the adjacent middle keels. The metal sound barrier can prevent the falling risk caused by the problems of displacement, accidental impact, size measurement and the like, and is used for prolonging the fatigue service life of the metal sound barrier.

To facilitate the procurement of materials and to improve workability.SOLUTION: An outer sound absorbing material 31 fitted to close an end space below the expansion device 29 at both ends in the longitudinal direction of the expansion gap 23 corresponding to the width direction of the bridge, and an inner sound absorbing material 41 fitted to close an internal space sandwiched between the end spaces in the expansion gap 23 are provided. A main body 32,42 of the outer sound absorbing material 31 and the inner sound absorbing material 41 is formed of a sound absorbing sponge, and at least a main body 42 of the inner sound absorbing material 41 has a structure in which a mat-like sound absorbing sponge is equally folded in two. The inner sound absorbing material 41 is formed so that the length of a part corresponding to the longitudinal direction of the expansion gap part 23 is shorter than a half of the longitudinal length of the expansion gap part 23, and a plurality of inner sound absorbing materials 41 are fitted while being supplemented. A sound insulation layer 33,43 made of metal is formed on the outer surfaces of the outer sound absorbing material 31 and the inner sound absorbing material 41, which are exposed to the outside when the outer sound absorbing material 31 and the inner sound absorbing material 41 are fitted into the expansion gap 23.SELECTED DRAWING: Figure 1

The invention discloses a fireproof isolation totally-closed sound barrier which comprises an arch-shaped support installed above a road, the arch-shaped support is provided with a plurality of standard sound barrier units distributed in the longitudinal direction of the road, and a fireproof isolation belt distributed in the transverse direction of the road is arranged every a plurality of spans. The fireproof isolation belt is composed of at least one full-metal sound barrier unit. The standard sound barrier unit of each span comprises a plurality of light-transmitting sound insulation screen bodies which are located on the top and spliced in the transverse direction of a road and a plurality of metal sound absorption screen bodies which are located on the side and spliced in the vertical direction. Each all-metal sound barrier unit comprises a plurality of metal sound absorption screen bodies which are located on the top and spliced in the transverse direction of the road and a plurality of metal sound absorption screen bodies which are located on the side and spliced in the vertical direction. The metal screen bodies with the proper width are arranged in the longitudinal direction of the totally-closed sound barrier at intervals of a certain length, the overall fireproof grade of the totally-closed sound barrier is improved, and losses caused by fire hazards are reduced.

The present invention provides an electrically assisted bicycle that can suppress a metal sound and unnecessary rotation of pedals during gear change.　Provided is an electrically assisted bicycle (1) wherein the magnitude of assistance with pedals (4) is limited from when a first transmission gear ratio is changed to a second transmission gear ratio until when the assistance with the pedals (4) which corresponds to the second transmission gear ratio is started.

The present application relates to the technical field of layered polymer composite material, and discloses a layered composite noise reduction material for sound barrier and a preparation method thereof, the noise reduction material is an integrated composite structure with a functional skin and a sound absorption core material; the functional skin is prepared by reaction of a first premix containing a first polyether polyol, an aliphatic polyol modified polyether amine and a phosphate ester polyol; the sound absorption core material is prepared by reaction of a second premix containing a second polyether polyol and an epoxy-terminated polysiloxane; the preparation method adopts an integrated forming process, the first premix is applied in a mold, and when it reaches a gel state but has not completely solidified, the second premix is injected for co-solidification forming; the present application solves the problem of interlayer separation, the aliphatic polyol modified polyether amine endows the skin with excellent toughness and weather resistance, and the epoxy-terminated polysiloxane ensures high porosity and sound absorption performance of the core material, the material has stable structure and balanced performance, and is suitable for fields such as metal sound barrier.

To prevent defects such as scratches on a curtain surface of a shutter curtain 3 spirally wound around a winding body 4 and unpleasant metallic sounds from occurring more effectively than a conventional one-piece sheet material under clamping.SOLUTION: First and second sheet material supply devices 10, 11 are provided, as sheet material supply means W, in a storage space S of a winding body 4 so that first and second sheet materials 10a, 11a are supplied between adjacent curtain surfaces in an overlapping state.SELECTED DRAWING: Figure 15

The utility model relates to the technical field of sound insulation house circuit wiring, in particular to a sound insulation board with a built-in circuit. Comprising a plurality of spliced wallboard bodies, a built-in circuit is pre-buried in each wallboard body, each built-in circuit comprises a JDG pipe and a power line arranged in the JDG pipe, each wallboard body comprises a punched metal acoustic board and an outer board, and the space between the punched metal acoustic board and the outer board is filled with a sound insulation material; the built-in pipeline is arranged in the wallboard body, so that the problem that a sound insulation room is not attractive and not firm due to the fact that the pipeline is externally arranged in the sound insulation room building technology is effectively solved; the circuit is pre-embedded in the board of the sound insulation room, so that the integration level of the circuit is higher; and by arranging the grooves, the wire arrangement grooves, the arc-shaped grooves and the like, on one hand, the wiring difficulty can be reduced, and on the other hand, the main power line can be conveniently fixed.

The application belongs to the technical field of piezoelectric thin film hetero-integration, and particularly relates to a PMN-PT piezoelectric single crystal thin film heterostructure with a metal acoustic wave reflection layer, a preparation method and application thereof. The PMN-PT piezoelectric single crystal thin film heterostructure comprises a silicon substrate, a silicon dioxide insulating layer, a high acoustic impedance metal intermediate layer and a lead magnesium niobate piezoelectric single crystal thin film layer. The lead magnesium niobate piezoelectric single crystal thin film layer is a lead in niobate-lead magnesium niobate-lead titanate single crystal thin film or a lead magnesium niobate-lead titanate single crystal thin film. Compared with the prior art, the PMN-PT piezoelectric single crystal thin film heterostructure can highly localize acoustic wave energy in the piezoelectric single crystal thin film, significantly suppress acoustic wave energy leakage to the substrate, and solve the acoustic leakage, vertical electric field loss and thermal stress mismatch bottleneck of the conventional piezoelectric hetero-integration technology.

The utility model discloses a non-metal sound barrier unit plate carrying device which comprises a carrying bottom frame, a top frame, a V-shaped pull rod, a barrier bearing module and a hoisting module, the carrying bottom frame is of a frame structure with idler wheels arranged at the bottom, the top frame is welded on the top side of the carrying bottom frame, and the V-shaped pull rod is arranged on the front side of the carrying bottom frame. A plurality of groups of barrier bearing modules are arranged on the inner side of the carrying bottom frame at intervals; each barrier bearing module comprises a socket, an inserting rod and a bearing assembly, the sockets are integrally connected to the left outer side edge and the right outer side edge of the carrying bottom frame, and the inserting rods can be fixedly inserted into the sockets. Bearing assemblies are fixed to the insertion rods at intervals and comprise buckles fixed to the insertion rods on the two sides of the carrying bottom frame and bearing ribs connected between the two buckles, and anti-skid particles abutting against the sound barrier plate are arranged on the upper side face and the lower side face of each bearing rib. The carrying equipment is provided with the barrier bearing module, so that the sound barrier can be stressed uniformly in the carrying process, and the sound barrier is prevented from being deformed.

This invention discloses a method and system for tracing the entire lifecycle status of a metal sound barrier, belonging to the field of status tracing technology. The method specifically includes: acquiring raw data of the entire lifecycle of the metal sound barrier; constructing a time-series feature vector based on the raw data; parsing the time-series feature vector to generate a preliminary tracing result; performing anomaly correlation judgment on the preliminary tracing result; generating an enhanced tracing tag when anomalies exist; and constructing a full lifecycle tracing chain based on the enhanced tracing tag and the preliminary tracing result to perform full lifecycle status tracing of the metal sound barrier. This application enables the sound barrier to have a traceable status chain from manufacturing to final service state, which is beneficial for maintenance decisions, controllable service status, and damage evolution assessment.

The utility model provides a rapid dismounting and mounting device for a railway metal sound barrier unit. The rapid dismounting and mounting device comprises a base; the conveying assembly is arranged on the base, a conveying belt is arranged on the conveying assembly, a first combination part is arranged on the conveying belt, and the sound barrier units are detachably connected with the conveying belt through the first combination part, so that the conveying belt conveys the sound barrier units in the forward direction or the reverse direction; the conveying assembly is arranged corresponding to the supporting column for placing the sound barrier unit, the supporting column is provided with a containing cavity for containing the sound barrier unit, and when the conveying belt forwards conveys the sound barrier unit, the sound barrier unit enters the containing cavity; and when the transmission belt reversely transmits the sound barrier unit, the sound barrier unit is moved out of the accommodating cavity. The rapid dismounting device for the railway metal sound barrier unit solves the technical problem that time and labor are wasted in the sound barrier dismounting process in the prior art.

The utility model discloses a music turntable display device, which comprises a transparent plate, a side wall ring, a sound production plate and a turntable bearing, sound production needles are mounted on the sound production plate, and balls are placed on the sound production plate. According to the utility model, the side wall ring and the sounding plate are fixedly connected, the side wall ring and the transparent plate installed above define the closed main body, then the closed main body is integrally and rotatably connected with the turntable bearing, the turntable bearing is installed and fixed on the bracket, and the bracket is integrally installed and fixed on the support frame, so that the whole body formed by the side wall ring and the sounding plate can freely rotate within the range of 360 degrees; during demonstration, the side wall ring is rotated, so that the steel balls on the sounding plate impact the metal sounding needles with different lengths at different positions in the rotating process, and then a fair sound melody is made; the demonstration device is simple in overall structure and reliable in protection, the internal structure still has high stability after being used for many times, the demonstration device can be placed in public places such as science and technology museums for demonstration and free interaction, and the maintenance cost and the maintenance frequency are reduced.

The invention discloses a metal-elastomer adhesive film-metal sound insulation composite material and a preparation method and application thereof, and belongs to the technical field of metal-elastomer adhesive film-metal sound insulation composite materials. The preparation method disclosed by the invention comprises the following steps: carrying out epoxy group grafting modification on an elastomer to obtain a modified elastomer; blending and melting the modified elastomer and silicon dioxide particles, and carrying out calendering treatment to obtain an elastomer adhesive film; and the elastomer adhesive film and a metal material are subjected to hot pressing, and the metal-elastomer adhesive film-metal sound insulation composite material is obtained. The method solves the technical problem that an existing preparation method is difficult to realize excellent vibration reduction and tear resistance at the same time.

The utility model discloses a fiber toughening nonmetal sound barrier curing kiln which comprises a kiln body, the kiln body is provided with a kiln door, an inner cavity of the kiln body is provided with a curing portion and a heating portion, the heating portion is located on any one side or multiple sides of the periphery of the curing portion, the curing portion comprises a base arranged at the bottom end of the inner cavity of the kiln body, and the base abuts against a plurality of placing frames. The heating part comprises a pipe frame, the pipe frame is provided with a heat exchange pipe connected to an external heating medium generating device, and a plurality of cooling fins are arranged on the outer side face of the heat exchange pipe at intervals. The positions of every two vertically-adjacent placing frames are locked through the positioning pieces, the situation that the multiple placing frames are staggered, inclined and toppled when the multiple vertically-stacked placing frames are transferred is prevented, and the number of the placing frames is flexibly adjusted according to the number of the sound barriers. The contact area of the heat exchange pipe and air in the inner cavity of the kiln body is increased through the cooling fins, heat provided by a heating medium is fully utilized, the heating efficiency of the inner cavity of the kiln body is improved, and the heating time is saved.

The utility model discloses an upright combined sound barrier plate, which belongs to the technical field of sound barrier plates and comprises a base, a plurality of H-shaped steel columns are fixedly mounted at the top of the base, and the H-shaped steel columns are fixedly mounted at the bottom of the base. A first metal sound absorption and insulation board, a second metal sound absorption and insulation board, an acrylic sound insulation board, a third metal sound absorption and insulation board and a fourth metal sound absorption and insulation board are sequentially clamped between every two adjacent H-shaped steel stand columns from bottom to top. The first metal sound absorption and insulation board, the second metal sound absorption and insulation board, the third metal sound absorption and insulation board and the fourth metal sound absorption and insulation board can be combined to form a sound barrier board to replace a traditional overall sound insulation barrier board, so that only parts at damaged positions are replaced when local damage occurs, resource waste caused by overall replacement is avoided, production cost is reduced, and production efficiency is improved. And meanwhile, the water-permeable sound-absorbing block is additionally arranged at the gap between the base and the first metal sound-absorbing and insulating plate, so that the joint has the water-permeable effect and also has the sound-absorbing and noise-reducing effects.

The utility model relates to the technical field of sound barrier production and processing, and particularly discloses a fiber toughening non-metal sound barrier cutting machine which comprises a rack, a sliding cutting part is arranged on the rack, a cutting blade is arranged on the sliding cutting part, and at least two fixed rotating rollers for tensioning and supporting a conveying belt are arranged at the two ends of the rack. The front side and the rear side of the sliding cutting part are each provided with a plurality of sliding rotating rollers, the multiple sliding rotating rollers are installed on the rack and can slide front and back in the length direction of the rack, the conveying belt is arranged and penetrates through the sliding cutting part, and one of the fixed rotating rollers is in power connection with a power device driving the conveying belt to rotate. The sliding cutting part is provided with a plurality of steering tensioning rotating rollers which are used for enabling the conveying belt to penetrate through the conveying face of the sliding cutting part section to sink downwards, and the cutting piece is located above the sunken part of the conveying belt. The sound barrier cutting machine is provided with the conveying belt and the power device for driving the conveying belt to rotate, the equipment cost is reduced, and the sliding cutting part can synchronously slide and cut along with a sound barrier.

1. The name of this design product: Metal sound barrier unit panel main beam. 2. Purpose of this design product: used as the frame main beam of the metal sound barrier unit panel. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

This disclosure relates generally to electronic and methods. More musical instruments, systems, particularly, this disclosure relates to electronic percussion instruments such as tom toms, snare drums, bass drums, cymbals, and hi-hats, and assemblies of instruments (e.g., percussion instruments), such as drum sets. Even more particularly, this disclosure relates to wireless electronic percussion instruments, and percussion instruments with interchangeable and / or removable components to change the instrument between a traditional percussion instrument (that relies on resonance and / or vibration to produce sound) and an electronic percussion instrument. The present disclosure also relates to electronic cymbal instruments, such as cymbal assemblies and hi-hat assemblies, that can be used in conjunction with a traditional acoustic metal cymbal.

The invention discloses a metal sound absorber sound barrier design method and device, equipment, a medium and a product, and relates to the technical field of noise control, and the method comprises the steps: determining a target frequency band based on a target sound source; establishing a thermal viscosity-pressure acoustic coupling simulation model of the sound barrier; establishing a model database; scanning the sound barrier thermal viscosity-pressure acoustic coupling simulation model based on the data of the model database, and establishing a simulation database; comparing the sound absorption coefficient obtained by the simulation database with the sound absorption coefficient obtained by the existing theoretical model, and if a deviation exists, correcting the sound absorption coefficient of the simulation database; the maximum noise reduction coefficient and the maximum maximum effective sound absorption bandwidth in the target frequency band serve as optimization targets, and the optimal design parameters and expected performance of the metal sound absorber sound barrier are obtained. Core parameters such as the double-layer distance, the back cavity depth and the micropore diameter can be flexibly adjusted based on the target vibration frequency band, and it is guaranteed that the performance of the sound absorber is optimal.

The utility model discloses an inserting plate type metal sound barrier unit plate, which belongs to the technical field of sound barriers, and comprises a back plate and a panel buckled with the back plate, the panel comprises a plurality of arc plate parts, a flat plate part is formed between the adjacent arc plate parts, and a plurality of through holes are arranged on the panel. The panel is provided with a plurality of through holes, the size and density of the through holes can be designed according to noise of different frequencies to adapt to different noise reduction use scenes, the bending part is provided with holes with different diameters, the noise of different frequencies can be attenuated, and the effect of blocking a sound bridge can be achieved; a plurality of arc plate parts are arranged on the panel, the reflection angle of noise is changed, multiple times of reflection and superposition of the noise between the surface of a vehicle body and the sound barrier panel are avoided, meanwhile, the strength of the panel is improved, and the rigidity of the panel is greatly improved; and the rubber pads are arranged between the unit plates which are stacked up and down, so that the buffering and sealing effects are achieved, the sound leakage phenomenon is completely eradicated, and the sound insulation effect of the sound barrier unit plates is improved.

The invention discloses welding equipment for metal sound barrier machining, and belongs to the technical field of welding equipment. The supporting legs are fixedly connected to the bottom of the [-shaped seat; and the placing plate is fixedly connected to the inner side of the [-shaped seat. By means of a set of ingenious linkage transmission mechanism combining the worm gear, the worm, the ratchet wheel, the pawl and the reciprocating lead screw, automatic execution and switching of the cutting function and the welding function are achieved. According to the design, only one motor is needed for driving, after groove cutting is completed, the cutting milling cutter can be automatically switched into the welding gun, the welding process is immediately started, and the process conversion efficiency from cutting to welding and the automation degree are greatly improved. Meanwhile, a ratchet wheel and pawl mechanism ensures unidirectivity and reliability of tool switching, accidental rotation in a non-switching state is effectively prevented, the stability and safety of the operation process are ensured, and therefore the overall efficiency and precision of welding machining of the metal sound barrier are remarkably improved.

The invention relates to the technical field of sound barriers, and particularly discloses ceramsite for a metal sound barrier and a preparation method of the ceramsite. The ceramsite for the metal sound barrier comprises an inner core and a waterproof layer, and the inner core comprises the following materials in parts by weight: 100 parts of fly ash; 20 parts of cement; 8 parts of calcined gypsum; 4 parts of quick lime; 6-8 parts of expanded perlite; 2.5 to 7.5 parts of hydrogen peroxide; the waterproof layer is prepared from a waterproof coating; the waterproof coating comprises the following materials in parts by weight: 5 parts of epoxy resin; 2 parts of PDMS; 1.7 parts of triethylene tetramine; 0.3 part of a curing agent; 0.3 to 0.5 part of titanium dioxide; 35 parts of a solvent; the preparation method comprises the following steps: S1, preparing the inner core; s2, preparing a waterproof coating; s3, ceramsite preparation. The ceramsite can be used in a metal sound barrier, and has the advantages of water resistance, corrosion resistance, high strength and good sound absorption and noise reduction effects.

The utility model belongs to the technical field of sound barriers, and particularly relates to a railway inserting plate type metal sound barrier III-type unit plate. The novel metal sound barrier unit plate comprises a main beam, an edge beam and a unit plate arranged between the main beam and the edge beam, the main beam and the edge beam are each provided with a labyrinth type clamping groove, the clamping grooves are used for inserting and positioning sound absorbers of the unit plate, each labyrinth type clamping groove comprises a groove wall composed of two opposite vertical plates and a labyrinth cavity formed in the groove bottom, transverse plates are arranged on the inner sides of the vertical plates, and the transverse plates are arranged on the inner sides of the vertical plates. The transverse plate and the groove bottom are provided with protrusions distributed at intervals, the protrusions of the transverse plate and the groove bottom are staggered to form a labyrinth cavity, and a through opening of the labyrinth cavity is formed in the inner side of the transverse plate. The novel metal sound barrier unit plate can quickly and effectively absorb high-speed rail pulsating airflow and noise impact, the sound absorption and noise reduction effect is long-acting and stable, and the novel metal sound barrier unit plate has the advantages of being compact in structure, stable in connection, economical and durable.

The utility model discloses a fiber toughening nonmetal sound barrier length trimming device which comprises a rack, the rack is provided with a conveying belt which is driven by a first driving device and used for conveying a sound barrier, and the rack is provided with a first cutting blade which is driven by a second driving device and used for cutting the sound barrier on the conveying belt. The first cutting blade can be close to and away from a sound barrier located on the conveying belt in the front-back direction and the left-right direction, the conveying belt comprises a belt body, the belt body makes contact with the sound barrier through a plurality of protrusions arranged on the outer surface, and the machine frame is provided with a limiting mechanism. The top ends of the protrusions are located above the top end of the belt body, when the first cutting blade cuts to the bottom of the sound barrier, the bottom of the first cutting blade makes contact with the protrusions or the bottom of the first cutting blade is located in the interval between the adjacent protrusions, the first cutting blade is prevented from making direct contact with the belt body, and the overall structural stability of the belt body is guaranteed. The limiting mechanism prevents the sound barrier from displacing when the sound barrier is cut by the first cutting blade.

The utility model discloses a metal sound barrier unit plate for rail transit, which is mounted on guardrails on two sides of a road and comprises a mounting seat, a fixing frame and a sound barrier plate, the mounting seat is fixed on the outer sides of the guardrails, and a dovetail groove is formed in the top surface of the mounting seat; a dovetail joint which can be clamped in the dovetail groove in a sliding manner is fixed at the bottom end of the fixed frame; a slot is formed in one side of the fixed frame, and an insertion block matched with the slot is fixed on the other side of the fixed frame; a plurality of ventilation holes are formed in the two sides of the fixing frame; the sound screen plate is embedded and fixed in the fixing frame to absorb sound. According to the sound barrier, an assembly type structure is adopted, the sound barrier plates and the mounting seats are mutually clamped through the fixing frames, and every two adjacent unit plates are connected in an inserted mode, so that the sound barrier is more convenient to assemble and disassemble; meanwhile, pulsating pressure is eliminated through the ventilation holes, and the structural strength and the service life of the sound barrier are guaranteed.

The utility model relates to a damping type railway metal sound barrier unit plate suitable for higher speed per hour, in particular to a railway inserting plate type metal sound barrier which is composed of a face plate, a back plate, two-end vertical supporting section bars, a middle vertical supporting section bar, vertical supporting fixing piece section bars, two-end outer side damping pieces, an inner structure damping pad and a sound absorption assembly. Belongs to the technical field of vibration and noise reduction in the field of environmental protection. The face / back plate is integrally formed in a bending mode, and a combined frame is formed in a folded plate buckling mode. The two-end vertical support sectional material and the middle vertical support sectional material are mounted in the surface / back plate buckling frame and are used for supporting the sound absorption assembly; the vertical support fixing part sectional materials are used for clamping and fixing the two-end vertical support sectional materials and the middle vertical support; the outer damping pieces at the two ends adopt double-pipe rubber strips and are fixed at the positions of the two sides of the two ends of the unit through rivets; the structural damping pad is arranged at the right-angle buckling position of the surface / back plate and is applied in a full-length manner; the sound absorption assembly is clamped in the clamping groove of the vertical supporting profile and has the sound absorption and noise reduction functions.