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56 results about "Metal sound" patented technology

Liquid metal acoustic sensing fiber and preparation method thereof

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.
Owner:BEIJING INST OF CLOTHING TECH

Composite nonmetal sound barrier unit plate

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.
Owner:HENGSHUI YUTIEXIN ENVIRONMENTAL PROTECTION ENG CO LTD

Nonmetal sound barrier

The utility model relates to a non-metal sound barrier, which belongs to the technical field of noise protection, and comprises a noise reduction mechanism, a sound absorption cotton plate and a sound insulation plate, the noise reduction mechanism comprises a noise reduction plate, a plurality of internally hollow noise reduction blocks and a plurality of noise reduction sound boxes, a plurality of inserting grooves are formed in the top surface of the noise reduction plate, and a plurality of sound inlet holes communicated with the inserting grooves are formed in the plate surface of the noise reduction plate; the plurality of noise reduction blocks are respectively inserted into the plurality of insertion grooves, and a plurality of sound through holes are formed in the end surfaces of the noise reduction blocks; the two noise reduction loudspeakers are fixed to the two inner side walls of the noise reduction block respectively, and the sound emitting directions of the noise reduction loudspeakers are perpendicular to the axis direction of the multiple sound through holes. According to the utility model, the two noise reduction loudspeakers are fixed on the two inner side walls of the corresponding noise reduction blocks in the length direction of the carriageway, and the sound emitting directions of the noise reduction loudspeakers are vertical to the axes of the plurality of sound through holes, so that the noise generated by vehicles can be greatly reduced by offsetting, and the requirement of residents along the carriageway on low noise is met.
Owner:BEIJING BAISHIXING CONSTRUCTION TECHNOLOGY CO LTD

Electronic musical instruments and systems

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.
Owner:DRUM WORKSHOP INC

Layered composite noise reduction material for sound barrier and preparation method of layered composite noise reduction material

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.
Owner:HENGSHUI YUTIEXIN ENVIRONMENTAL PROTECTION ENG CO LTD

Waterproof metal sound barrier unit plate

The utility model relates to the technical field of metal sound barrier unit plates, in particular to a waterproof metal sound barrier unit plate which comprises a back plate body and a cover plate, two rock wool layers are arranged in the back plate body, the front ends of the two rock wool layers are each provided with two through holes penetrating front and back, and round grooves are formed in the four corners of the front end of the cover plate. Holes are formed in the inner walls of the four circular grooves, connecting bolts are movably connected into the four circular grooves in a penetrating mode, a plurality of water baffles are fixedly connected to the middle of the front end of the cover plate, a sealing strip is fixedly connected to the outer portion of the rear end of the cover plate, and a plurality of penetrating grooves penetrating front and back are formed in the middle of the rear end of the cover plate; the positions of the penetrating grooves correspond to the positions of the water baffles. According to the waterproof metal sound barrier unit plate, the sealing strips are arranged and matched with the grooves, rainwater is prevented from entering the unit plate, rock wool is prevented from being affected with damp, and the unit plate is prevented from rusting, so that the service life is prolonged.
Owner:SICHUAN YUNLU TECH CO LTD

Insertion plate type I-shaped unit plate of metal sound barrier

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.
Owner:HENGSHUI YUTIEXIN ENVIRONMENTAL PROTECTION ENG CO LTD

Soundproof structure and sound absorbing material for bridge

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
Owner:KYOWA RUBBER +1

Fireproof isolation totally-closed sound barrier

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.
Owner:GUANGZHOU NORTH SECOND RING TRANSPORT TECH CO LTD

Electrically assisted bicycle

PCT designated stage expiredWO2025154478A1Rider propulsionMetal soundGear ratio
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.
Owner:MINEBEAMITSUMI INC

A layered composite noise reduction material for a sound barrier and a preparation method thereof

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.
Owner:HENGSHUI YUTIEXIN ENVIRONMENTAL PROTECTION ENG CO LTD

Metal sound absorption and insulation composite board

The utility model discloses a metal sound absorption and insulation composite board, and relates to the technical field of sound insulation and noise reduction. The composite board comprises a composite board body, the composite board body is composed of a galvanized steel plate, a damping sound insulation felt, a light steel keel, glass sound absorption cotton, a wrapping layer and a galvanized perforated plate, the glass sound absorption cotton is filled in the inner side of the light steel keel, and sound absorption glass fabric and a waterproof sound transmission film are wrapped outside the light steel keel and used for water prevention and sound transmission of the composite board. The metal sound absorption and insulation composite board is used for manufacturing a sound insulation and noise reduction device of an equipment sound insulation cover, is usually composed of a cover and can cover a high-noise sound source inside, so that noise is effectively prevented from being transmitted outwards, the influence of the noise on the environment is reduced, the noise can be effectively absorbed, converted and blocked through a multi-layer structure, and the sound insulation and noise reduction effects are good. And noise generated during operation of the equipment is obviously reduced.
Owner:广东美程环保科技有限公司

Barbell piece double-sound cylinder

The utility model discloses a disc double-sound cylinder, which belongs to the field of double-sound cylinders, and comprises a cylinder body, a handle is fixedly mounted on the outer wall of the cylinder body, a long hole is formed in the outer wall of the handle, double metal discs are arranged in the long hole, the double metal discs are fixedly mounted in the long hole through long nails, and the double metal discs are fixedly mounted in the long hole through the long nails. The outer walls of the two metal dumbbell pieces extend to the outer side of the handle through the long holes, the handle is located in the middle of the outer wall of the cylinder body, the handle and the cylinder body are in a T shape, the two metal dumbbell pieces are perpendicular to the cylinder body, the two metal dumbbell pieces can collide to give out metal sounds when the cylinder body is shaken, and meanwhile when the cylinder body is hit by a hammering hammer, the hammering hammer can be used for hammering the cylinder body. The two metal discs are matched to produce metal sound to realize double timbres of the same musical instrument, when a user wants to produce single tone of a traditional barrel, a player can press the two metal discs by fingers, the two metal discs produce mute or blind sound after being pressed, and the diversity of sound produced by the barrel is improved.
Owner:SHENYANG YIDA TECH CO LTD

Shutter device for building

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
Owner:SANWA SHUTTER CORP

Sound insulation board with built-in circuit

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.
Owner:HENAN YUANHANG SOUND INSULATION MATERIAL TECH CO LTD

PMN-pt piezoelectric single crystal thin film heterostructure of metal acoustic wave reflection layer and preparation method and application thereof

PendingCN122396207AIndiumSingle crystal
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.
Owner:XI AN JIAOTONG UNIV

Carrying equipment for nonmetal sound barrier unit plates

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.
Owner:JIANGSU JINSHI ENVIRONMENTAL PROTECTION ENGINEERING CO LTD

A method and system for tracing the entire life cycle status of metal sound barriers

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.
Owner:上海申华声学装备有限公司 +1

Rapid dismounting and mounting device for railway metal sound barrier unit

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.
Owner:CHINA STATE RAILWAY GRP CO LTD +2

Music turntable display device

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.
Owner:ANHUI SCI & TECH MUSEUM

Metal-elastomer adhesive film-metal sound insulation composite material and preparation method and application thereof

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.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

Fiber toughening non-metal sound barrier curing kiln

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.
Owner:SHANDONG EXPRESSWAY TRANSPORTATION EQUIP CO LTD

Method for reducing air coupling ultrasonic detection edge blind area

The invention relates to a method for reducing an air coupling ultrasonic detection edge blind area, belongs to the technical field of nondestructive detection, and solves the problem that a detected part has a relatively large edge detection blind area in air coupling ultrasonic detection. The invention discloses a method for reducing an air coupling ultrasonic detection edge blind area, which comprises the following steps of: adding a metal sound blocking material on the edge of a detected piece, and filling a high-attenuation flexible material between the edge of the detected piece and the metal sound blocking material; and after ultrasonic detection scanning is completed, the ultrasonic C scanning image of the edge area is smoothed, so that air coupling ultrasonic detection of a micro blind area or no blind area on the edge of the detected piece is realized, and the accuracy and the reliability of a detection result are improved.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

Upright combined sound barrier plate

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.
Owner:NINGDE XINMING DECORATION ENGINEERING CO LTD

Metal loudspeaker base welding equipment

The invention relates to the technical field of horn welding equipment, and discloses metal sound horn base welding equipment which comprises a base mechanism and a supporting mechanism installed at the upper end of the base mechanism, a horn base body is arranged on the supporting mechanism, and a welding mechanism is installed on the inner wall of the base mechanism. The base mechanism comprises a bottom plate and a supporting column installed at the upper end of the bottom plate, under the action of the two lower guide rails and the two upper guide rails, the horn base body can be installed in a multi-point mode, inclination is avoided, the positioning effect is good, operation is easy, other horn base bodies continue to be fed, use is convenient, and the production efficiency is improved. After welding is completed, the horn base bodies can continue to slide away from the guide rail and are discharged from the discharging port, it is guaranteed that the clamping force and the clamping positions of the multiple horn bases are uniform, the damage risk is reduced, the welding efficiency is improved, and rework is reduced.
Owner:SICHUAN DUOMIN TECHNOLOGY CO LTD

Metal sound barrier unit plate suitable for rail transit

The utility model relates to the technical field of rail transit sound barrier equipment, in particular to a metal sound barrier unit plate suitable for rail transit. According to the technical scheme, the device comprises a pair of supporting frames and a plurality of linearly-arranged plate bodies installed in the middles of the supporting frames, and further comprises telescopic mechanisms installed at the two ends of the plate bodies and used for being separated from the middles of the supporting frames after being unfolded; the transmission mechanism is used for enabling the clamping groove plate at the end of the plate body to be quickly disassembled and assembled in the middle of the supporting frame. According to the metal sound barrier unit plate, the telescopic mechanism, the plate body, the supporting frame, the transmission mechanism and other structures are matched, when any damaged metal sound barrier unit plate of the rail transit is replaced, replacement can be conducted without disassembling part or all of the metal sound barrier unit plates, and therefore time and labor cost needed by replacement and maintenance are saved. Meanwhile, only the corresponding damaged metal sound barrier unit plate is replaced, so that the influence on rail transit can be reduced to the greatest extent, and traffic jam and delay are avoided.
Owner:SHANXI JUNHAO IND CO LTD

Fiber toughening nonmetal sound barrier cutting machine

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.
Owner:SHANDONG EXPRESSWAY TRANSPORTATION EQUIP CO LTD

Metal sound barrier unit plate main beam

ActiveCN309531774SMetal soundAcoustics
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.
Owner:HENGSHUI YUTIEXIN ENVIRONMENTAL PROTECTION ENG CO LTD

Electronic musical instruments and systems

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.
Owner:DRUM WORKSHOP INC