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171results about How to "Improve noise reduction" patented technology
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Noise reduction processing method and device, vehicle and storage medium
PendingCN121838705AImprove car experienceEfficient divide and conquerSound producing devicesActive noise controlNoise fieldAccelerometer
The invention discloses a noise reduction processing method and device, a vehicle and a storage medium, and relates to the technical field of intelligent cabins, and the method comprises the steps: carrying out the recognition based on an error signal and an accelerometer signal of the vehicle, and obtaining a noise scene where the vehicle is located; decomposing the accelerometer signal into a plurality of sub-band signals which are not overlapped with one another; for each sub-band signal, determining a noise reduction processing parameter corresponding to each sub-band signal based on the energy analysis and noise scene of the sub-band signal; based on the noise reduction processing parameter corresponding to each sub-band signal, performing adaptive filtering on each sub-band signal in combination with the error signal to obtain a noise reduction signal corresponding to each sub-band signal; and carrying out fusion reconstruction on the noise reduction signals corresponding to the plurality of sub-band signals to obtain a full-band noise reduction signal. According to the invention, adaptive filtering and noise reduction are carried out on each sub-band signal based on the noise scene where the sub-band signal is located, efficient division and treatment and response can be carried out on complex and multi-spectral structure noise, the noise reduction effect is improved, and the vehicle use experience feeling of a user is further improved.
Owner:XIAOMI EV TECH CO LTD
A central air conditioning pipeline noise reduction assembly
The utility model discloses a central air conditioning pipeline noise reduction assembly, including central air conditioning ventilation pipeline, the inside of central air conditioning ventilation pipeline is provided with central air conditioning ventilation pipeline, the inside of central air conditioning ventilation pipeline is provided with noise reduction assembly no.
Owner:ACTER TECH INTEGRATION GRP CO LTD
A noise reduction fire prevention fence for a photovoltaic energy storage device
The utility model provides a kind of noise reduction fire prevention fence of photovoltaic energy storage equipment, including multiple improved type enclosing mechanism;Improved type enclosing mechanism includes multiple side-by-side distribution support frame, and sound-absorbing board piece is assembled between adjacent support frame;Support frame includes first I type vertical steel frame and I type angle steel frame arranged at the top of first I type vertical, and the included angle of first I type vertical steel frame and I type angle steel frame is 120-135 °;Sound-absorbing board piece includes square frame body and sound-absorbing material filled in the inside of square frame body, and square frame body includes the inner side panel close to photovoltaic energy storage equipment, and multiple honeycomb holes are opened in the inner side panel through penetration.It is designed that the included angle of first I type vertical steel frame and I type angle steel frame of improved type enclosing mechanism is 120 °-135 °, and cooperate sound-absorbing board piece;Make sound wave multiple scattering after impact, reduce the noise peak of single direction strong reflection in sensitive area (such as residential area).
Owner:XIAMEN TOPFACE POWER ENERGY CO LTD +1
Miniature air pump with noise reduction structure
The utility model discloses a miniature air pump with noise reduction structure, including motor and motor output end region installation has the noise reduction ventilation structure, the noise reduction ventilation structure includes base, and motor is fixed mounting close to output end shell and base, and motor output end rotation penetrates the base center position, and the penetration end passes through the shaft coupling and connects the swing bar, and the base top installs the fixed seat, and the fixed seat top is equipped with the umbrella cover through the sealing washer, and the fixed seat is provided with four cover holes of rectangular setting, and the base is provided with eccentric wheel, and the fixed seat is located cover hole fixed and is fixed and is communicated with tower shape ventilation cover, and the swing bar top end is rotatably connected with eccentric wheel center position, and the eccentric wheel is fixedly covered and is installed with tower shape ventilation cover bottom, and the noise reduction effect aspect shows outstanding. The unique structure of tower shape ventilation cover increases the gas flow path and the contact area, effectively promotes the smooth airflow in and out, significantly reduces the turbulence and vortex generation, reduces the airflow noise from the source.
Owner:DONGGUAN COPPER PRECISION ELECTRONICS CO LTD
A 500kv main transformer core noise reduction auxiliary tool
ActiveCN224400196UCushion and absorb vibration energyreduce generationTransformers/inductances noise dampingTransformers/inductances magnetic coresAcoustic noise reductionTransformer
The utility model discloses a 500KV main transformer iron core noise reduction auxiliary tool belongs to transformer iron core noise reduction technical field, this 500KV main transformer iron core noise reduction auxiliary tool, transformer iron core subassembly sets up inside transformer body, the bottom of transformer iron core subassembly is installed to the noise reduction shell, and the top limiting installation of transformer iron core subassembly has the supplementary noise reduction cover board, one end of supplementary noise reduction subassembly sets up inside the noise reduction shell, and the bottom transmission connection of transformer iron core subassembly with supplementary noise reduction subassembly's another end, side first damping spring, side second damping spring and end damping spring, can effectively buffer and absorb the vibration energy that transformer iron core subassembly generates, reduce vibration transmission to reduce the generation and spread of noise. Meanwhile, the multilayer composite board and sound absorbing cotton in the supplementary noise reduction cover board can further absorb and block the noise, improve the noise reduction effect, and the supplementary noise reduction cover board is directly installed on the top of the transformer iron core subassembly and is not installed with the transformer body.
Owner:GUANGDONG YUANTIAN ENG
An integrated muffler die that reduces rattling
This utility model provides an integrated muffler mold that reduces impact damage, relating to the field of mold technology. It includes: an integrated mold body with a mold hole at the center of its top and a mold mounting groove at its bottom; a guide groove at a corresponding position on the outer side of the integrated mold body; a spring installed at the bottom inner side of the guide groove, and a guide slide plate installed therethrough; and a protective cover installed on the outer side of the guide slide plate. The protective cover moves upward above the top of the integrated mold body, providing comprehensive and effective protection for the mold hole. In complex workshop environments, the protective cover effectively blocks falling metal objects and other foreign objects, preventing damage to the mold hole from impacts and scratches, thus ensuring the integrity of the mold hole and solving the problem of potential damage to the mold edges caused by accidentally falling metal instruments.
Owner:ZHUOHENG MACHINERY TECHNOLOGY (QUZHOU) CO LTD
Active noise reduction method, storage medium, controller and vehicle
PendingCN122090857ASolve the problem of ear pressureImprove noise reductionSpeech analysisSound producing devicesNoiseIn vehicle
This invention discloses an active noise cancellation method, storage medium, controller, and vehicle. The method, used in a vehicle, includes: monitoring the power supply voltage of the vehicle's main unit; correcting the original audio signal collected by the microphone based on the power supply voltage; generating a target cancellation signal based on the corrected audio signal; and controlling the vehicle's speakers to perform noise reduction processing on the vehicle cabin based on the target cancellation signal. This method uses active noise cancellation technology to solve the ear-piercing problem. During noise reduction processing, the original audio signal collected by the vehicle's microphone is corrected based on the power supply voltage of the vehicle's main unit. A target cancellation signal for noise reduction is generated based on the corrected audio signal, and the vehicle's speakers are controlled to perform noise reduction processing on the vehicle cabin based on the target cancellation signal, thereby improving the noise reduction effect.
Owner:BYD CO LTD
Camping house for petroleum exploration
ActiveCN224149238UImprove ventilationavoid damageBuilding insulationsDwelling buildingArchitectural engineeringStructural engineering
The utility model relates to the technical field of camping houses, and discloses a camping house for petroleum exploration, which comprises a living box body, two entrances and exits are symmetrically arranged on the side edges of the living box body, closing doors are rotatably mounted on the entrances and exits, a box body supporting assembly is arranged at the bottom of the living box body, and a box body is arranged on the box body supporting assembly. A box body supporting assembly is arranged at the bottom of the living box body, a moisture-proof height adjusting assembly is arranged on the box body supporting assembly, the box body supporting assembly and the moisture-proof height adjusting assembly are arranged at the bottom of the living box body, and a polyurethane foam plate and a waterproof sealing plate are arranged at the bottom of a supporting bottom plate in the box body supporting assembly. The polyurethane foam plate can improve the moisture-proof capacity of the bottom of the supporting bottom plate, so that the distance between the bottom of the living box body and the ground can be flexibly adjusted according to user requirements, the ventilation capacity of the bottom of the living box body is improved, and the box body supporting assembly at the bottom of the living box body can be effectively prevented from being easily affected with damp for a long time to be damaged; the service life is prolonged.
Owner:XIAN YUANCHENG ENERGY EQUIPMENT CO LTD
Voice denoising network training method and device, electronic equipment and storage medium
The application provides a speech noise reduction network training method and device, electronic equipment and computer readable storage medium, comprising: performing short-time Fourier transform on sample speech data in a sample data set to obtain sample time-frequency domain features; the sample speech data includes noise speech data and clean speech data, and the sample time-frequency domain features include noise time-frequency domain features and clean time-frequency domain features; calculating the noise time-frequency domain features through a neural network model to obtain predicted time-frequency domain features; evaluating the difference between the predicted time-frequency domain features and the clean time-frequency domain features through a loss function to obtain a function value, and determining whether the function value is less than a preset loss threshold; wherein the loss function is switched periodically during the training process; if yes, it is determined that the neural network model converges, and a speech noise reduction network is obtained. According to the application, the speech noise reduction network considering noise reduction and speech fidelity effect is trained without increasing model parameters.
Owner:BESTECHNIC SHANGHAI CO LTD
A noise reducing drill bit and method of use
The application belongs to the technical field of drill bits, and discloses a noise reduction drill bit and a use method thereof, which comprises a drill body, a drill bit for drilling, an auxiliary drill bit arranged between the drill body and the drill bit for assisting drilling, a cleaning assembly arranged in the drill body for cleaning, and an auxiliary assembly arranged in the drill body for assisting ejection, a circular through hole for feeding is arranged in the drill bit, and one end of the circular through hole is in communication with the interior of the drill body. The application utilizes the equipment to push the push rod to move, so that the push plate can be well driven to move in the interior of the drill body. Meanwhile, the support rod, the positioning groove and the moving block are used in cooperation, so that the push plate can be assisted to push during the pushing process, the pushing effect is better, and the noise reduction effect is also better.
Owner:HUNAN HUILIAN ROAD & BRIDGE CO LTD
Durable efficient boiler steam exhaust silencer reliable in structure
An efficient boiler steam exhaust silencer reliable in structure and durable comprises a silencer body, a supporting plate and a base used for achieving the overall supporting effect, the supporting plate is transversely installed on the base through a plurality of shock absorbers, and the silencer body is transversely and fixedly installed on the top of the supporting plate; the supporting plate comprises a steam inlet cylinder, a silencing cylinder and a steam outlet cylinder which are fixedly communicated in sequence, a steam inlet of the steam inlet cylinder is connected with a steam inlet flange through a steam inlet hose, a steam outlet of the steam outlet cylinder is connected with a steam outlet flange through a steam outlet hose, and the outer side of the silencing cylinder is sleeved with a heat exchange jacket used for cooling steam in the silencing cylinder. A cooling water inlet and outlet pipeline is fixedly connected to the heat exchange jacket, and a plurality of silencing plates are sequentially arranged in the steam outlet cylinder from one side of the silencing cylinder to one side of the steam outlet. By integrating the high-strength structural design and the multi-stage composite silencing technology, the efficient attenuation and low-resistance steam exhaust of steam exhaust noise are realized while long-term stable operation and durability are ensured.
Owner:LIANYUNGANG XINYUN ELECTRIC MACHINERY CO LTD
One-way valve with low noise
ActiveCN224079699Ureduce impactreduce noiseCheck valvesValve members for absorbing fluid energyLow noiseGas passing
The utility model relates to the technical field of one-way valves, in particular to a low-noise one-way valve which comprises a valve body and a connecting pipe arranged at the front end of the valve body, a flow inlet is formed in the middle end of the connecting pipe, a fixing plate is fixedly arranged on the inner wall of the valve body, a sliding rod is inserted in the middle end of the fixing plate, and a first spring is arranged on the outer wall of the sliding rod in a sleeved mode. The outer wall of the end, away from the fixing plate, of the sliding rod is fixedly sleeved with a valve seat. After gas passes through, the valve seat is reset under the action of the first spring and the second spring, the protrusion enters the flow inlet, the flow inlet is sealed till the valve seat makes contact with the connecting pipe and cannot continue to move, the valve seat is buffered through the first spring and the second spring, the impact force generated by contact of the valve seat and the connecting pipe is reduced, and the sealing effect of the valve seat is improved. The noise generated in the collision process of the valve seat and the connecting pipe is reduced, the loss of the device in the collision process of the valve seat is reduced, the service life of the one-way valve is prolonged, and the use safety performance of a machine is improved.
Owner:CHANGZHOU TAOHUA APPLIANCE CO LTD
Active noise reduction method and system and automobile
PendingCN121963686AReduce the impact on driving experienceImprove noise reductionSignalling/lighting devicesSound producing devicesNoiseIn vehicle
The invention relates to an active noise reduction method and system and an automobile. The method comprises the following steps: acquiring a pressure signal in a tire cavity of the vehicle; processing the pressure signal to obtain a noise signal, and controlling to generate an anti-phase sound wave signal based on the noise signal; and the loudspeaker is used for playing sound corresponding to the anti-phase sound wave signal in the tire cavity. According to the method, a pressure signal in a tire is directly obtained, after the pressure signal is processed, a noise signal is obtained, an anti-phase sound wave signal corresponding to the noise signal is generated, and the anti-phase sound wave signal is directly played in the tire, so that noise is directly processed in the tire. By adopting the active noise reduction method, the tire pressure sensor on the automobile can be directly adopted as the detection sensor, the vehicle-mounted chip is adopted as the processor, only one loudspeaker needs to be added, and the cost is low. And the active noise reduction method can adapt to tires of different sizes, and the application scene is wide.
Owner:CHONGQING LANDIAN AUTOMOBILE TECHNOLOGY CO LTD
一种智能型吸音降噪窗帘结构
Owner:Z&F CULTURE CONSTR CO LTD
A base isolation and noise reduction structure for a rotating machinery life testing platform
ActiveCN224625190UEasy to isolate and protectAbility to fold and store
This utility model relates to the technical field of rotating machinery life testing platforms, and in particular to a base isolation and noise reduction structure for a rotating machinery life testing platform. The structure includes a base plate, a top plate, and a base. Isolation components are provided on the outer sides of the base plate and top plate, and noise reduction components are provided on the inner sides of the isolation components. An installation component is provided between the isolation components and the base plate and top plate. The noise reduction components include multiple sets of noise reduction strips, all of which are hollow inside and arranged in a regular, continuous, undulating wave shape. The multiple sets of noise reduction strips are arranged perpendicularly and interlaced. The inner cavity of the noise reduction strips is filled with sound-absorbing cotton. The upper and lower ends of the base are fixedly connected to the top plate and base plate, respectively. This utility model can reflect and scatter sound waves multiple times to extend the propagation path of the sound waves, causing them to consume more sound energy, thereby providing excellent noise reduction effects.
Owner:ZHENJIANG HUAFEI TESTING TECH CO LTD
Reservoir and compressor
ActiveCN117073274BImprove noise reductionIncrease length selection rangeRefrigeration componentsNoise reductionMechanical engineering
The application discloses a liquid accumulator and a compressor, and relates to the technical field of liquid accumulators, and in particular to a liquid accumulator and a compressor. The liquid accumulator comprises a shell and a liquid cup, the shell is provided with an air inlet and an air outlet at two ends respectively, and an air flow channel is formed between the air inlet and the air outlet; the liquid cup is installed in the shell, and a first air flow channel is formed between the outer circumferential wall of the liquid cup and the inner wall of the shell; in the direction from the air inlet to the air outlet, the first air flow channel comprises a first air flow section and a first noise elimination section arranged in sequence, and the maximum cross-sectional area of the first noise elimination section is greater than the maximum cross-sectional area of the first air flow section. According to the liquid accumulator, the length selection range of the noise elimination section can be expanded without changing the size of the liquid accumulator, the length of the noise elimination section which is suitable for the noise wavelength of the liquid accumulator can be obtained, and the noise reduction effect of the liquid accumulator is improved.
Owner:ANHUI MEIZHI PRECISION MFG +1
Air-cooled heat pump unit exhaust vane type silencer structure
ActiveCN224284929UImprove noise reductionUniform flow fieldNoise suppressionAir-flow control membersAir velocityMuffler
The utility model discloses an exhaust vane type silencer structure of an air-cooled heat pump unit, which is mounted above an exhaust fan component of the air-cooled heat pump unit and comprises an upper silencing insert, a lower plenum chamber and a flow deflector component arranged in the lower plenum chamber. The flow deflector assembly comprises flow deflectors, fixing ribs and fixing columns, the flow deflectors are at least used for adjusting flow field distribution in the silencer, and the fixing ribs are connected with the flow deflectors and the fixing columns. The flow deflector is used for adjusting the flow field of airflow entering the silencer insertion piece part, so that the flow field in the silencer is more uniform, the situation that airflow regeneration noise is increased due to the fact that the local wind speed is too high is avoided, and finally the actual noise reduction performance of the silencer is improved.
Owner:浙江省环境科技股份有限公司
Blast furnace gas pipeline silencer
ActiveCN224094057ULower the decibelEase of meeting emission requirementsPipe elementsGas emission reductionNoise reductionAcoustic cavity
The utility model discloses a blast furnace gas pipeline silencer which comprises a shell, a gas inlet is formed in one side of the shell, a gas outlet is formed in the other side of the shell, a silencing assembly is arranged in the shell and comprises a silencing plate, a second silencing cavity is formed in the inner wall of the shell, and a gas outlet is formed in the other side of the shell. The inner wall of the second silencing cavity is connected with a sound absorption plate through bolts, one side of the sound absorption plate is connected with a silencing plate through bolts, the circumferential inner wall of the silencing plate is provided with a first silencing cavity, the circumferential outer wall of the silencing plate is connected with a fixing column through bolts, and one end of the fixing column is connected with the inner wall of the shell through bolts. According to the blast furnace gas pipeline silencer, due to the fact that the silencer is provided with the silencing assembly, the noise reduction effect of the device can be better improved, and due to the fact that the device is provided with the overhauling assembly, the service life of the device can be better maintained.
Owner:HEBEI YONGYANG SPECIAL STEEL GRP CO LTD
Range hood with noise reduction guide plate
ActiveCN224188660UGuaranteed installation accuracysmooth entryDomestic stoves or rangesLighting and heating apparatusNoise reductionAirflow
The range hood comprises a shell, a fan and a control assembly which are arranged in the shell, and an exhaust fume collecting hood arranged at the bottom of the shell, the fan is vertically arranged in the shell, a fume inlet of the fan is opposite to the inner wall of the rear side of the shell, a fume guide cavity is formed between the fan and the inner wall of the rear side of the shell, and the noise reduction guide plate is obliquely arranged on the upper portion of the fume guide cavity. The upper end of the noise reduction flow guide plate is located above the smoke inlet and fixedly connected with the top wall of the machine shell, and the lower end of the noise reduction flow guide plate is opposite to the smoke inlet and connected with the rear side wall of the machine shell in a clamped mode. Compared with the prior art, the range hood provided with the noise reduction flow guide plate has the advantages that the upper end of the noise reduction flow guide plate is connected with the top wall through the two screws, so that the noise reduction flow guide plate can bear direct impact of airflow without deformation or vibration, and secondary noise is avoided; the lower end of the noise reduction flow guide plate is clamped with the rear side wall of the machine shell, the placement angle of the noise reduction flow guide plate can be limited through clamping matching, and the installation precision of the noise reduction flow guide plate is guaranteed.
Owner:ZHEJIANG SHUAIKANG ELECTRIC
Noise reduction structure and range hood comprising same
PendingCN121782215AIncrease the sound absorption areaGuaranteed aerodynamic performanceDomestic stoves or rangesLighting and heating apparatusNoiseNoise reduction
The invention discloses a noise reduction structure and a range hood comprising the noise reduction structure, the noise reduction structure is arranged in a case of a fan system, the noise reduction structure is arranged at a volute tongue of a volute of the fan system, the noise reduction structure is provided with a noise reduction cavity in a penetrating mode in the axial direction of the volute, and the noise reduction cavity is communicated with the volute tongue of the volute. The noise reduction cavity communicates with the first air inlet area and the second air inlet area of the volute, and the cross section area of a cavity of the noise reduction cavity accounts for 20%-35% of the cross section area of the noise reduction structure. The noise reduction structure is arranged at the volute tongue, so that the operation noise of the fan system is reduced. By arranging the noise reduction cavity, the first air inlet area and the second air inlet area are communicated through the noise reduction cavity, the flowing resistance of airflow is improved, the adverse effect of the noise reduction structure on the flowing state in the case is weakened, and the inner wall of the noise reduction cavity can also be used for absorbing noise; in this way, the noise reduction effect is improved, and the aerodynamic performance of the fan system is guaranteed by increasing the sound absorption area of the noise reduction structure.
Owner:NINGBO FOTILE KITCHEN WARE CO LTD
Closed cabin structure of new energy ship
ActiveCN224184440UImprove noise reductionto suppress the effectHull interior subdivisionVessel partsHull structureNew energy
The utility model relates to the technical field of new energy ships, and particularly discloses a closed cabin structure of a new energy ship. The closed cabin structure comprises a cabin body arranged on the new energy ship; the active noise reduction assembly is arranged on the cabin body; comprising a detection cavity arranged on the inner wall of a cabin body, an audio detection element arranged on one side of the detection cavity, an audio element arranged on one side of the detection cavity and facing the other side of the detection cavity, a circuit board for receiving the audio detection element and controlling the audio element, and a power supply element for supplying power to the audio detection element and the audio element, by adopting the mode of combining active noise reduction and cabin structure passive noise reduction, the noise reduction effect in the cabin is improved on the premise of ensuring various sealing performances of the new energy ship, and the situation that the hearing of sailors is damaged due to the fact that a motor, a generator and the like can generate high noise in the operation process and are exposed in a high-noise environment for a long time is avoided. And noise transmission is effectively reduced, so that sailors can work in a relatively quiet environment.
Owner:CHONGQING DILLY YACHT MFG
Bag-type dust collector assembly convenient to assemble
ActiveCN224141770Uquick installationquick releaseHuman health protectionDispersed particle filtrationBaghouseDust control
The utility model relates to the technical field of bag-type dust collectors, and discloses a bag-type dust collector assembly convenient to assemble, which comprises a bag-type dust collector shell, a connecting plate is in threaded connection with the interior of the bag-type dust collector shell, a plurality of connecting ports are formed in the connecting plate, dust collecting bags are inserted into the connecting ports, and the connecting ports are connected with the dust collecting bags. Limiting holes are formed in the two sides of the surface of the connecting opening, and mounting mechanisms are inserted into the limiting holes. According to the bag-type dust collector assembly convenient to assemble, through the arrangement of the mounting mechanism, during mounting, a dust collection bag is inserted into a connecting opening, so that a positioning hole formed in the surface of the dust collection bag is aligned with a limiting hole, then a stretched plug pin is loosened, and the plug pin is driven to return to the initial position under the reverse acting force provided by a supporting spring; and the bolts are inserted into the positioning holes and the limiting holes until the bolts are inserted into the positioning holes and the limiting holes, so that the effect of quickly mounting and dismounting the dust collecting cloth bag is achieved, and the mounting efficiency of mounting personnel is improved.
Owner:SUZHOU TAIHU FAN MFG
Flow detection device for breathing machine and breathing machine
ActiveCN224193880Ureduce flow rateGuaranteed stabilityRespiratorsType ventilatorMechanical engineering
The flow detection device comprises a shell, an airflow channel is arranged in the shell, and an air resistance structure is arranged in the airflow channel so that the airflow channel can be divided into an air inlet section located on one side of the air resistance structure and an air outlet section located on the other side of the air resistance structure. The air resistance structure is at least provided with a ventilation grid part in the middle area of the airflow channel, the shell is provided with a detection opening corresponding to the air inlet section and provided with a detection pipe extending into the air outlet section corresponding to the air outlet section, and the tail end of the detection pipe extends to the ventilation grid part to detect airflow passing through the ventilation grid part. The ventilation grating part is separated to form a plurality of airflow passing ports arranged in an array mode, airflow can be divided into a plurality of strands to pass through when passing through, the stability of the flow state of the airflow can be guaranteed, and the airflow can pass through the detection pipe in the air outlet section in a laminar flow state. The detection pipe can cross a viscous area close to the channel wall to directly detect the airflow in the central area of the airflow channel.
Owner:JIANGSU YUYUE MEDICAL EQUIP&SUPPLY CO LTD +2
A new car roof structure for a medium-high speed elevator
ActiveCN224394366UImprove noise reduction efficiencyGuaranteed load capacitySound producing devicesBuilding liftsGlass fiberControl theory
The utility model relates to a new car roof structure for medium -high speed elevator, aims at the demand of reducing elevator shaft pit depth. Including car roof welding spare (1), perforated plate (2), sound insulation material (3) and car roof sealing plate (4), its car roof welding spare (1) as core bearing matrix, adopts the design of grid reinforcing rib, and the reinforcing rib height is 20 50mm, and the interval is 200 400mm, the perforated plate (2) is laid on the upper portion of car roof welding spare (1), is fixed through the drill tail silk, the sound insulation material (3) selects polyurethane foam or glass fiber cotton thickness 10 30mm, the car roof sealing plate (4) adopts galvanized steel sheet or stainless steel sheet, and the edge sets up the bending structure, the utility model not only guarantees the strength and rigidity of elevator car bottom, also effectively improved the security and operation effect of overall structure, is applicable to the elevator equipment that needs shallow pit installation.
Owner:SHANDONG FUJI ZHIYU ELEVATOR +1
Heat insulation profile structure of broken bridge aluminum door and window
ActiveCN224078964UImprove stress resistanceavoid deformationNoise insulation doors/windowsHeat conservationMechanical engineering
Owner:SHANXI JULI TONGDA FIRE EQUIPMENT CO LTD
Noise reduction device for bearing machining
ActiveCN224059322Ureduce vibrationreduce noiseNon-rotating vibration suppressionSound producing devicesVibration attenuationRubber ring
The utility model relates to the technical field of noise reduction devices, in particular to a noise reduction device for bearing machining, which comprises a noise reduction pad and anti-skid particles, the anti-skid particles are fixedly connected to the lower side of the noise reduction pad, a vibration and noise reduction mechanism is arranged on the inner side of the noise reduction pad, the vibration and noise reduction mechanism comprises a fixed cylinder, and the inner side of the fixed cylinder is tightly attached to a rubber ring sleeve. A movable bearing table is slidably connected to the inner side of the rubber ring sleeve, a piston sleeve sleeves the outer side of the movable bearing table, the lower side of the piston sleeve is tightly attached to the upper end of the noise reduction spring, a connecting through hole is formed in the inner side of the side edge of the lower end of the fixing cylinder, and a damping vibration attenuation assembly is fixedly connected to the outer side of the fixing cylinder and comprises a communicating pipe; according to the multi-layer structure design and the hydraulic damping principle, effective buffering of mechanical vibration and remarkable reduction of noise are achieved, and the vibration reduction and noise reduction performance and stability of the device are further enhanced through structural optimization and detailed design of each further-implemented scheme.
Owner:CHANGSHA MEGE BEARINGS
A flexible reinforced connection structure for bulkheads, panels and handrails
PendingCN122078548AImprove comfortgood for physical and mental healthHull interior subdivisionVessel partsMarine engineeringWorking environment
This invention relates to the field of ship vibration reduction and noise reduction technology, specifically to an elastically reinforced connection structure for bulkheads, panels, and handrails. The structure includes bulkheads, panels, and handrails, with the handrails connected to the outer surface of the panels. The key feature is the presence of an elastically reinforced connection structure assembly between the inner surface of the panel corresponding to the handrail and the bulkhead. This assembly includes an elastic noise-reducing reinforcing connector, a lower elastic clip, a support pad, and a support plate. The outer side of the elastic noise-reducing reinforcing connector is bolted to the panel and handrail, while the inner side is connected to the bulkhead via the lower elastic clip, support pad, and support plate. This design offers advantages such as simple structure, good noise reduction effect, improved cabin comfort and working environment, and benefits to the physical and mental health of crew and passengers.
Owner:AVIC WEIHAI SHIPYARD
Gear structure with self-adaptive floating function
The utility model relates to mechanical engineering technical field discloses a gear structure with self -adaptation floating function, including input cover, the outer wall of input cover is installed with floating mechanism, the outer wall detachable connection of input cover has the fixing frame, the inner wall of fixing frame is installed with sealing mechanism, the inner wall of fixing frame all screw thread connection has a plurality of bolts, the inner wall of fixing frame all is set up a plurality of thread holes, the floating mechanism includes gear shaft subassembly, the inner wall sliding connection of gear shaft subassembly has a small cover, the outer wall sliding connection of small cover has a medium cover, in the utility model, the gap between input gear and medium cover is reserved, provides the self -adaptation space for motor shaft to extend into, offsets the processing deviation, the motor shaft contact medium cover right end surface will move left after, this structure increases the adaptability of motor shaft and input component, simple structure, obvious noise reduction.
Owner:SHAANXI LIUHUAN INTELLIGENT MANUFACTURING TECHNOLOGY CO LTD
A noise reduction device for municipal construction projects
ActiveCN224282170Uavoid pollutionImprove dust filterDispersed particle filtrationUsing liquid separation agentArchitectural engineeringNanofiber
This utility model relates to the field of building engineering technology and discloses a noise reduction device for municipal building engineering, including a noise reduction plate. Positioning strips are fixedly connected to both sides of the noise reduction plate, and support columns are movably installed on both sides of the noise reduction plate. Fixing grooves are fixedly connected to the outer surface of the support columns, and an adsorption plate is fixedly connected to one side of the noise reduction plate. This utility model has the following advantages and effects: When dust occurs, the nanofiber dust-absorbing net can be quickly disassembled and connected to the water pipe and nozzle. The increased weight of the water mist and the adsorption of the nanofiber dust-absorbing net improve dust filtration, solving dust pollution while reducing noise. When the nanofiber dust-absorbing net needs cleaning, it can be quickly removed for external rinsing. Simultaneously, the noise reduction plate is connected by a plug-in method, with a sealing strip between the positioning strip and the fixing groove, improving the sealing during installation and ensuring a stable connection. When damage occurs and replacement is needed, it can be disassembled efficiently.
Owner:JINGZHOU GAOFA CONSTRUCTION ENGINEERING CO LTD
Secondary aluminum waste gas dust remover with filtering function
ActiveCN224057001UImprove filtering effectstop the flowCombination devicesSound producing devicesAir filtrationInsulation layer
The utility model discloses a secondary aluminum waste gas dusting machine with a filtering function, which comprises a filter box, a gas outlet of the filter box extends into a fan, a net cage is mounted in the filter box and positioned above air filter cotton, a filter screen is mounted in the filter box and positioned above a baffle a, and a baffle b is mounted in the filter box and positioned above the baffle b. The baffle a is located above the baffle b, the baffle b is located above the baffle c, a guide frame is installed in the filter box, the filter box is rotationally connected with a feeding shaft, gradient sound-absorbing cotton is bonded to the outer side of the filter box, the gradient sound-absorbing cotton is located on the inner side of the honeycomb core plate, and the surface of the honeycomb core plate is coated with a sound insulation layer. A baffle, a filter screen, air filter cotton and the like in the filter box are matched to filter waste gas, and the filtering effect is good; the gradient sound absorption cotton, the honeycomb core plate and the sound insulation layer on the outer side of the filter box are matched to achieve a good noise reduction effect.
Owner:SHANDONG HONGSHUN CYCLE TECH CO LTD