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39 results about "Noise effects" patented technology

Noise health effects are the physical and psychological health consequences of regular exposure, to consistent elevated sound levels. Elevated workplace or environmental noise can cause hearing impairment, hypertension, ischemic heart disease, annoyance, and sleep disturbance.

A lifting stage structure and its noise reduction treatment method

ActiveCN119877909BTheatresGear wheelNoise
The present invention relates to a lifting stage structure and a noise reduction processing method thereof, including a plurality of stages arranged on the ground. There is a pit seat between the plurality of stages, and a lifting platform is arranged in the pit seat; the lifting platform is composed of a bottom plate, a plurality of telescopic rods and a lifting plate. The bottom ends of the plurality of telescopic rods are fixedly arranged on the top of the bottom plate, and the lifting plate is fixedly arranged on the top ends of the plurality of telescopic rods; a driving assembly is arranged on the bottom plate and is used to drive the telescopic rods to telescopically move, driving the lifting plate to lift and move; a plurality of protection mechanisms are respectively arranged on the stages around the pit seat and are used in cooperation with the driving assembly to implement sealing when a gap is formed between the lifting plate and the stage after the lifting plate rises, preventing people from falling below the lifting plate, and limiting the telescopic rods that extend during the protection process; solving the problem that when the existing stage lifting platform uses methods such as chains, gears and racks for transmission and lifting, certain noise will be generated when the teeth collide with each other during the lifting process, affecting the viewing and listening effects.
Owner:SHANGHAI CONSTRUCTION FOURTH CONSTRUCTION GROUP CO LTD

Noise reduction device for vacuum pump and using method of noise reduction device

The noise reduction device for the vacuum pump comprises a pump shell and a motor, an output shaft of the motor movably penetrates through the pump shell and is fixedly connected with an impeller, and the pump shell is fixedly communicated with an air inlet pipe and an air outlet pipe. Gas in the annular cavity is extracted through equipment, the interior of the portion, outside the impeller, of the pump shell is in a vacuum state, so that the vacuum noise reduction effect on the impeller is achieved, the gas is guided through a second annular groove, the gas passes through a plurality of second noise reduction holes, noise of gas flowing sound of the gas inlet pipe is reduced, and on the contrary, the noise is reduced. The air outlet unit is used for reducing noise of air flowing sound of the air outlet pipe, lubricating oil is injected into the round box through the oil bag, the output shaft of the motor is lubricated and reduced in noise, the overall structure is matched with one another, the multi-targeted noise reduction effect of equipment is achieved, the noise influence in the use process of the equipment is greatly reduced, the injection amount of the lubricating oil can be controlled in a timing mode, and the service life of the equipment is prolonged. And the operation stability and the service life of equipment connection are improved.
Owner:FOWLER FLUID TECH (NANJING) CO LTD

Building construction noise evaluation method and system

The invention relates to the technical field of building construction management, and discloses a noise evaluation method and system for building construction. The acquisition module is used for acquiring noise data of a building construction area and a focused area, psychological state data of constructors and users in the focused area, and construction stage information data of the building construction area; the data analysis and processing module is used for performing data analysis and processing on the noise data, the psychological state data of the constructors and the users in the important attention area, and the construction stage information data of the building construction area, and establishing a noise evaluation model in the construction environment; the early warning module is used for acquiring a noise score in the construction environment according to the noise evaluation model in the construction environment so as to evaluate the noise influence of the building construction environment, and judging whether a noise reduction measure is taken or not so as to carry out noise management; according to the invention, the comprehensiveness of noise evaluation data is improved, and the accuracy of noise evaluation is greatly improved.
Owner:CHENGDU NO 2 CONSTRUETION COMPDNY

Vibration absorption damping device for gearbox

The utility model discloses a vibration absorption damping device for a gear box, which comprises a gear box base, a damping mechanism and a lubricating mechanism, the gear box base is fixedly connected with a gear box upper cover, and the gear box base is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft. The damping mechanism is arranged in the gearbox base; according to the vibration absorption damping device for the gear box, vibration is detected through a sensor, current is adjusted through a PLC, the magnetic field intensity is adjusted by changing the current of a magnet exciting coil, and magnetic particles in magnetorheological fluid in gaps can be arranged in the magnetic field direction to form a chain-shaped or columnar structure through the magnetic field intensity; according to the magnetorheological fluid damping device, the viscosity of the magnetorheological fluid is increased, so that damping force is generated, vibration energy is converted into heat energy and consumed, noise generated by vibration is reduced, the working environment of workers is improved, and the noise is effectively prevented from affecting physical and psychological health of the workers.
Owner:XINJIANG UNIVERSITY

Roof heat preservation structure

ActiveCN222595349Ureduce noise intensityImprove stabilityAcoustic noise reductionHeat conservation
The utility model relates to the technical field of roofs, and discloses a roofing heat preservation structure which comprises a roofing body, a fixing frame and a fixing frame, the upper surface of the roofing body is in contact with the bottom face of the fixing frame, the outer surface of the fixing frame is in sliding connection with the inner wall of the fixing frame, and the inner wall of the fixing frame is in sliding connection with four limiting columns. The bottom face of each limiting column is fixedly connected with the inner wall of the fixing frame, the inner wall of the fixing frame is fixedly connected with a sound insulation plate, and the inner wall of the fixing frame is fixedly connected with sound absorption cotton. Under the action of the sound insulation plate, a part of sound generated by raindrop impact can be effectively blocked, the sound generated by rainwater impact continues to be diffused inwards after being blocked by the sound insulation plate, and when the sound is diffused to the sound absorption cotton, the sound absorption cotton can absorb a part of noise, so that the sound absorption effect is improved. And meanwhile, noise enters the silencing holes, so that the noise intensity can be further reduced, and the situation that the rest and work of indoor personnel are affected by the noise generated when the surface of the device is hit by raindrops is avoided.
Owner:GUANGZHOU TAOYUAN CONSTR ENG CO LTD

Special positioning device for impeller production

The utility model relates to the technical field of impeller production, in particular to a special positioning device for impeller production, which comprises a protection mechanism and a limiting mechanism, the protection mechanism is slidably connected above a base, the limiting mechanism is fixedly connected above the base, the protection mechanism is arranged, and the limiting mechanism is fixedly connected above the base. The impeller and the limiting mechanism are protected through the first dustproof outer cover and the second dustproof outer cover in the structure, the second dustproof cover and the first dustproof cover are manually slid, the first dustproof cover can be stored in the second dustproof cover, a space is reserved for placing the impeller above a limiting block, and sound insulation cotton plays a role in noise reduction and sound insulation; and the rubber waterproof coating has good elasticity and toughness, a tough waterproof layer can be formed on the surface of the dust cover, high temperature and corrosion are effectively resisted, and the situation that the production efficiency is reduced due to the fact that equipment is damaged and corroded, noise affects workers and increases the risk of equipment failures is avoided.
Owner:JIANGSU TUOMING MASCH MFG CO LTD

Ultralow-temperature air-cooled heat pump unit

The utility model discloses an ultralow-temperature air-cooled heat pump unit, which belongs to the technical field of air-cooled heat pump units and comprises a case, a compressor is arranged in the case, an evaporator is arranged at the top of the compressor, an air guide pipe is arranged on the surface of the top of the case, and an air suction pipe is arranged on the surface of one side of the air guide pipe. An annular valve clack is arranged on the surface of the top of the air guide pipe, a rotating rod is arranged on one side of the annular valve clack, a servo motor is arranged at one end of the rotating rod, a sound insulation assembly is arranged on the surface of one side of the machine box, and a filtering and purifying assembly is arranged in the air guide pipe. The problem that noise generated in the operation process of the unit affects normal life of people is solved, the practicability of the unit is improved, the unit is suitable for wide popularization, the problem that air which is not filtered possibly affects human health is solved by arranging the filtering and purifying assembly, the heating quality of the unit is improved, and the heating comfort level is guaranteed.
Owner:SHANDONG ZHONGKENENG ARTIFICIAL ENVIRONMENT CO LTD

Noise elimination method and device, electronic device and computer medium

The invention provides a noise elimination method and device, an electronic device and a computer medium, the noise elimination method is applied to the noise elimination device, and the method comprises the following steps: acquiring environmental data of a position where the noise elimination device is located, the environment data at least comprises environment sound and a face image of a person at the position within a preset range; performing image analysis on the face image, and detecting whether the person is in a negative emotion or not; if it is detected that the person is in the negative emotion, detecting whether noise appears in the environment sound; if detecting that the noise appears in the environment sound, processing the noise to obtain a noise signal and a noise direction; generating a noise reduction signal with the same amplitude and opposite phase as the noise signal; and playing the noise reduction signal to the noise direction. The noise reduction signal can be played to eliminate noise, and the noise is prevented from affecting life or work of people.
Owner:FUTAIJING PRECISION ELECTRONICS (YANTAI) CO LTD +1

Low-noise power transformer

The utility model discloses a low-noise power transformer in the technical field of transformers, which comprises a transformer body, first radiating fins are fixedly mounted at the front end and the rear end of the transformer body, second radiating fins are fixedly mounted at the left end and the right end of the transformer body, and noise reduction mechanisms are arranged on the outer sides of the first radiating fins and the second radiating fins. The low-noise power transformer is additionally provided with the noise reduction mechanism, the noise reduction mechanism adopts a structure for blocking and reducing noise, the intensity of the noise can be reduced in the noise transmission process, and the situation that sound waves are transmitted to a residential building by a transformer body at a high position is effectively avoided by means of the phenomenon that the sound waves are refracted downwards when making contact with low temperature; under the condition that normal heat dissipation of the transformer body is guaranteed, the noise reduction mechanism blocks and reduces electromagnetic force and mechanical vibration noise generated by the interior of the transformer body, the intensity of the noise can be effectively reduced, and the noise is prevented from affecting daily life of residents.
Owner:GUANGZHOU YUEBIAN ELECTRIC CO LTD

Low-noise dry-type power transformer

The utility model relates to the technical field of power transformers, and discloses a low-noise dry-type power transformer which comprises a dry-type power transformer body and a noise reduction outer box, the dry-type power transformer body is fixedly installed on the inner side of the noise reduction outer box, and annular sound absorption ends are arranged on the two sides of the noise reduction outer box. According to the sound-absorbing and noise-reducing box, noise can be conducted into the sound-absorbing and noise-reducing pipe from the annular sound-absorbing end head for sound absorption and noise reduction, the cross-shaped sound-absorbing plate and the rectangular sound-absorbing plate are arranged in the sound-absorbing and noise-reducing pipe, the sound-absorbing and noise-reducing capacity is enhanced, the sound-absorbing and noise-reducing outer cylinder is used for noise reduction and sound absorption, and the noise-reducing type base plate assists in noise reduction and sound absorption in the box body. And the sound-absorbing and noise-reducing pipe is mounted on the annular sound-absorbing end in a sleeving manner, and the sound-absorbing and noise-reducing outer cylinder is mounted at the other end of the sound-absorbing and noise-reducing pipe, so that the overall disassembly and assembly are convenient, the sound-absorbing and noise-reducing capability and the sound-absorbing and noise-reducing effect of the device are excellent, the overall disassembly and assembly are simple and convenient, and the sound-absorbing and noise-reducing device is suitable for popularization and use.
Owner:逄金祥

Design method for reducing the sound pressure level of punched square tubes and avoiding wind whistle defects in curtain walls

The present disclosure relates to the field of perforated square tube noise technology, and in particular to a design method for reducing the sound pressure level of perforated square tubes and avoiding the defects of curtain wall wind whistles. The present disclosure provides a design method for reducing the sound pressure level of perforated square tubes, step one: blowing perforated square tubes in different cavity states at a wind speed of 7.2m / s, the distances between the punched side of the perforated square tube and the light noise reduction baffle are four types, namely, empty tube, 50mm, 20mm and 0mm, to determine the distance that meets the needs of the appearance design while minimizing the noise, and record the laboratory measured noise values ​​of the square tube under wind at different wind speeds. Then, the perforated square tube and noise parameters specified in step one are used to construct a curtain wall model in the software, and the noise distribution diagram of the curtain wall model under different levels of wind speed is simulated and calculated. The above design method is used to evaluate the noise impact of the curtain wall model formed by the perforated square tube on the urban sound environment under different wind speeds, while achieving the dual optimization goals of the perforated decorative curtain wall being beautiful and having relatively little impact on environmental noise.
Owner:ARCHITECTURAL DESIGN & RES INST OF TSINGHUA UNIV

Noise reduction construction site house building structure and construction method thereof

The invention discloses a noise reduction construction site house building structure and a construction method thereof, relates to the technical field of constructional engineering, and aims to solve the technical problems that gaps exist, resonance is easy to generate and the noise amplification effect is easy to generate in a current window fixed mounting mode. The building site house comprises a building site house main body, a window is constructed on the plate wall of a house plate on one side of the building site house main body, a window main body is installed in the window, embedded grooves communicating with the four side edges of the window are formed in the side faces of the house plate of the building site house main body, and a connecting block is reserved between every two adjacent embedded grooves. The honeycomb structure can effectively absorb and disperse noise, reduce the sound transmission efficiency and remarkably improve the sound insulation effect of the construction site house, the window body and the construction site house body are tightly connected through cooperation of the connecting pieces, the connecting grooves and the clamping grooves, noise introduction caused by gaps is reduced, and the advantages of being small in connecting gap, stable in structural position, high in practicability and the like are achieved. And the sound insulation effect is improved.
Owner:WENZHOU WANFENG CONSTR ENG CO LTD

Audio processing method and device, medium and product

The invention relates to the technical field of audio processing, in particular to an audio processing method and device, a medium and a product. According to the method, in the driving process of a vehicle, a vehicle-mounted terminal can obtain the real-time speed of the vehicle and played audios, and to-be-adjusted audio segments corresponding to the real-time speed of the vehicle and adjustment parameters corresponding to the to-be-adjusted audio segments are determined based on a first corresponding relation. Wherein the first corresponding relation is frequency ranges, influenced by noise, of audios played by the vehicle-mounted terminal at different speeds, and adjustment parameters corresponding to the frequency ranges. Therefore, the played audio can be adjusted based on the adjustment relation corresponding to each to-be-adjusted audio. In this way, the noise suppression effect can be improved by adjusting the audio segments, affected by the noise, in the audio.
Owner:SHANGHAI AWINIC TECH CO LTD

Silent power generation room

The utility model discloses a mute power generation room which comprises a room body, a bottom silencing plate is arranged at the bottom of the room body, a side silencing assembly is arranged on a side wall of the room body, and a top silencing plate is arranged at the top of the room body. An access door is arranged on the room body, and an access silencing plate is arranged on the access door; a ventilation door is further arranged on the room body, and a ventilation silencing plate is arranged on the ventilation door. A power generator is installed in the room body, a smoke outlet of the power generator is connected with a first silencer, and an air outlet of the power generator is connected with a second silencer. The sound in the power generation room can be absorbed, and then the noise influence of the diesel generator set on the outside is reduced.
Owner:SICHUAN HONGHUA PETROLEUM EQUIP CO LTD

Bedstead with noise reduction box

The invention relates to a bed frame with a noise reduction box. A motor of an existing bed frame is exposed, so that large noise is generated, and the use experience is affected. The noise reduction device comprises a frame body, a bearing assembly arranged on the frame body and a driving assembly driving the bearing assembly to act, the driving assembly comprises a motor, a noise reduction box completely wrapping the motor is arranged on the frame body, and the noise reduction box is of a multi-layer structure and comprises a sound absorption layer, a vibration reduction layer and a sound insulation layer which are sequentially arranged in a sleeving mode from inside to outside. And noise generated by operation of the motor is prevented from being transmitted outwards. The noise reduction box wrapping the motor is arranged, the noise reduction box is of a multi-layer structure, noise generated by the motor can be effectively prevented from being transmitted outwards, vibration generated by operation of the motor can be effectively absorbed, then the influence on sleep of a user is reduced, and the use experience is improved.
Owner:SLEEMON HEALTHY SLEEP TECHNOLOGY CO LTD

Noise reduction method and device, electronic equipment and wireless charging system

The invention provides a noise reduction method and device, electronic equipment and a wireless charging system. The method comprises the steps that a first electronic device is determined to be in a target scene, the target scene comprises a scene in which a built-in microphone is called to collect target audio and obtain target audio data in the wireless charging process of the first electronic device, the microphone comprises a first microphone, and the first microphone is adjacent to a fan in a second electronic device; and under the condition that the first electronic equipment is in the target scene, the first electronic equipment reduces the rotating speed of the fan based on interaction with the second electronic equipment, and / or eliminates the noise of the first microphone based on a first algorithm, so as to obtain the target audio data after noise reduction. The problem that the obtained target audio data is influenced by the noise of the fan in the second electronic equipment when the first electronic equipment is in the wireless charging process and the target audio needs to be collected can be solved. According to the invention, the noise reduction of the target audio data is realized, and the user experience is improved.
Owner:HONOR DEVICE CO LTD

Multifunctional detection rod

The utility model provides a multifunctional detection rod, and relates to the technical field of noise detection. A noise detector is arranged at the front end of the top of the mounting base, a contactor is arranged at the rear end of the top of the noise detector, the contactor of the noise detector is located under the detection rod body, an adjusting frame is fixedly connected to the rear end of the top of the mounting base, and the adjusting frame is located on the rear side of the detection rod body. And when the bottom position of the detection rod body is separated from the top position of the contactor of the noise detector, the influence of the noise on the detection rod body cannot be transmitted to the noise detector through the contactor of the noise detector, so that the acting force generated by the noise vibration of the detection rod body is reduced. The problems that an existing noise environment detection rod and a noise environment detector are integrally designed, in the process that the noise environment detector is not used, audio frequency received by the noise environment detection rod can be fed back to the noise environment detector, and the use precision of the noise environment detector is reduced are solved.
Owner:CHONGQING XIAMEI ENVIRONMENTAL PROTECTION TECH CO LTD

Novel vacuum pump noise reduction device

The invention relates to the technical field of noise reduction equipment, in particular to a novel vacuum pump noise reduction device which comprises a pump body, the bottom of the pump body is fixedly installed on the top of a damping assembly through bolts, the bottom of the damping assembly is fixedly connected with the inner bottom wall of a liquid storage assembly, and a cooling assembly is fixedly installed on the front face of the liquid storage assembly through bolts. One end of the cooling assembly is fixedly connected with the inner wall of the noise reduction assembly, noise generated by the pump body is absorbed by the sound absorption cotton, the noise is converted into heat energy after being absorbed by the sound absorption cotton, the micro water pump is started, cooling liquid in the liquid storage bin is conducted into a cooling cavity of the sealing cover through the micro water pump, and the sound absorption cotton can be cooled through the sealing cover; and meanwhile, the cooling liquid in the liquid storage bin and the cooling liquid in the cooling cavity of the sealing cover can further reduce noise generated by the pump body, so that environmental pollution caused by loud noise generated by the vacuum pump is avoided, field workers are not affected by the noise, and the body health of the workers is guaranteed.
Owner:HENGYANG JINGANGXI TECH CO LTD

Waste recovery device for hard metal machining

The utility model discloses a waste recovery device for hard metal processing, which relates to the technical field of waste recovery devices and comprises a waste recovery device body, a feed hopper and a discharge box, the feed hopper is mounted on one side of the top of the waste recovery device body, and the discharge box is mounted at the bottom of the front of the waste recovery device body. A protection sound insulation assembly is installed on the outer side of the waste recovery device body, and a filtering dust removal assembly is installed on one side of the waste recovery device body. The protection sound insulation assembly is matched with the filtering dust removal assembly to conduct sound insulation and dust removal on the waste recovery device body, and the problems that an existing waste recovery device does not have the dust removal and sound insulation effects in the using process, and consequently a large amount of dust and noise are generated in the using process of the waste recovery device are solved; the problems that physical health of surrounding personnel is affected, equipment operation is disturbed, and the using effect of the waste recovery device is reduced are solved, and the sound insulation and dust removal effects are achieved.
Owner:GUANGDONG CHJ IND CO LTD

Continuous positive airway pressure CPAP device featured with active noise cancellation and method thereof

A continuous positive airway pressure CPAP device featured with active noise cancellation comprises at least a patient interface device, a microphone, a controller, and an audio output device. The patient interface device is fluidly coupled to a base station via a patient circuit for delivery of a pressurized flow of breathable gas. The microphone is acoustically coupled to the CPAP device for capturing regular or random noise generated by or at the CPAP device at least during the delivery of breathable gas. The controller processes the captured noise, via an active noise cancellation ANC algorithm, and generates an ANC output signal. The audio output device, coupled to the patient interface device, generates a CPAP device noise cancellation audio output based on the ANC output signal, wherein the audio output reduces noise effects by eliminating up to a given noise threshold amount of the CPAP device noise.
Owner:KONINKLIJKE PHILIPS NV

A kind of broken bridge sound insulation aluminum alloy casement window

This application discloses a thermally broken aluminum alloy casement window, belonging to the field of doors and windows. It includes an outer frame, an inner frame installed inside the outer frame via a thermally broken strip, a side frame mounted on the inner wall of the inner frame via two hinges, a sash frame fixedly installed on one side of the side frame, and a glass assembly installed inside the sash frame. Both the inner frame and the sash frame are equipped with Helmholtz resonators. The sound insulation layer filled inside the sash frame effectively isolates external noise and reduces the impact of internal noise. At the same time, some sound energy can be absorbed by the outer tempered glass and the intermediate PVB film, while the air layer of the inner double-glazed glass can further block the transmission of sound waves. Furthermore, the Helmholtz resonator can be used to specifically absorb noise of a certain frequency.
Owner:NANJING WUJIAZUI DOOR&WINDOW FACTORY

Noise reduction protection room for construction

The noise reduction protection room for construction comprises a plurality of supporting bodies, the tops of the supporting bodies are fixedly connected through two longitudinal upper mounting rods, and the bottom of each longitudinal upper mounting rod is connected with a longitudinal lower mounting rod through a plurality of vertical mounting rods; the ends of the two longitudinal upper mounting rods are fixedly connected through the two transverse mounting rods to form a square-shaped frame, and the ends of the transverse mounting rods are fixedly connected with the two longitudinal lower mounting rods through the vertical mounting rods. Side sound barriers are fixed to the first sound barrier mounting area and the second sound barrier mounting area; top sound barriers are fixed to the tops of the supporting bodies. According to the noise reduction protection room for construction, the top sound barrier and the side sound barriers can shield wind and rain for the noise reduction protection room for construction, meanwhile, the top sound barrier and the side sound barriers can block most noise generated in the protection room, a good noise reduction effect is achieved, and the influence of building processing noise on the surrounding living environment can be greatly reduced.
Owner:CHENGDU NO 2 CONSTRUETION COMPDNY

Active noise reduction Bluetooth headset and components thereof

The present invention discloses an active noise reduction Bluetooth headset and its components, which relate to the field of headset technology, including an adjustment module, a noise reduction module, a power amplifier, and a Bluetooth module. The Bluetooth module is used to receive an audio signal and feed back the actual audio signal to the noise reduction module for noise reduction. The noise reduction module feeds back the signal to the power amplifier for output, and the adjustment module is used to adjust the noise reduction output of the noise reduction module and disable the function. After the Bluetooth module receives the audio signal, the external noise signal is collected by an electret for automatic elimination, so as to prevent the environmental noise from affecting the sound quality.
Owner:GUANGZHOU WESDAR ELECTRONICS TECH CO LTD

Silencer and vehicle

The present invention relates to the technical field of noise elimination, and more specifically, to a silencer device and a vehicle. The silencer device includes: a shell, a cavity is formed inside the shell; an air inlet pipe is connected to the cavity; a partition is arranged in the cavity to separate the cavity into a plurality of chambers; an air outlet pipe is connected to the cavity and is located in the plurality of chambers; a silencer assembly is integrated on the air outlet pipe, and the silencer assembly and the plurality of chambers together form a plurality of silencer chambers to at least eliminate noise of a plurality of frequency bands. Compared with the three-pipe maze exhaust silencer in the related art, it has a simple structure, uses fewer pipes, reduces interference with engine exhaust, ensures normal operation of the engine, and can eliminate noise of a plurality of frequency bands, thereby improving the noise reduction effect.
Owner:VOYAH AUTOMOBILE TECH CO LTD

Low-noise floor type direct current charging pile

The utility model discloses a low-noise floor type direct-current charging pile, relates to the field of charging piles, and solves the problem that a direct-current charging pile generates strong noise during use, the low-noise floor type direct-current charging pile comprises a cabinet body and a soundproof box, the soundproof box is fixedly installed in the cabinet body, and ventilation plates are fixedly connected to the inner walls of the two sides of the soundproof box; ventilation holes are formed in the inner walls of the cabinet body and the soundproof box, the inner wall of the top end of the ventilation plate communicates with a fan, the end, away from the ventilation plate, of the fan penetrates through the soundproof box, supporting plates are fixedly connected to the inner walls of the two sides of the soundproof box, and a charging pile body is arranged on the upper surfaces of the supporting plates. The noise reduction assembly can conduct sound insulation and noise reduction on noise generated by the charging pile, so that the charging pile cannot cause noise pollution during charging, meanwhile, noise can be effectively reduced at a quiet night or in a residential area, the noise is prevented from affecting the living quality of surrounding residents, and the use effect of the direct-current type charging pile is improved.
Owner:ZHEJIANG YUMA INTELLIGENT TECH CO LTD

Refrigeration equipment

The invention discloses refrigeration equipment. The refrigeration equipment comprises a box body, a press cabin, a refrigeration system and a first noise reduction structure, wherein the box body is provided with a box door; the press cabin is arranged at the bottom of the box body and is close to the box door; the refrigerating system comprises a compressor, a condenser and a condensing fan, and the compressor, the condenser and the condensing fan are arranged in the compressor bin; the first noise reduction structure is arranged on the side, close to the box door, of the press bin and extends in the width direction of the press bin. According to the refrigeration equipment, the space of the box body can be fully utilized, the volume ratio of the refrigeration equipment is increased, and the usable space of the refrigeration equipment is enlarged; and the first noise reduction structure is arranged on the side, close to the box door, of the press bin, noise of the press bin can be effectively prevented from spreading to the front portion of the refrigeration equipment, transmission sound energy is weakened, noise in front of the refrigeration equipment is reduced, and the noise influence on the use environment when the press bin is arranged in front is effectively avoided.
Owner:HEFEI HUALING CO LTD +2

Tempered glass with sound insulation effect

The utility model discloses toughened glass with a sound insulation effect, which comprises a mounting frame, first glass is fixedly arranged in the mounting frame, a first inner sealing rubber strip is fixedly arranged on the rear side of the first glass, second glass is fixedly arranged on the rear side of the first inner sealing rubber strip, and inert gas is filled between the first glass and the second glass. A second inner sealing rubber strip is fixedly arranged on the rear side of the second glass, third glass is fixedly arranged on the rear side of the second inner sealing rubber strip, and a third inner sealing rubber strip is fixedly arranged on the rear side of the third glass. Through the arrangement of the first glass, the first inner sealing rubber strip, the second glass, the second inner sealing rubber strip, the third glass, the third inner sealing rubber strip and the fourth glass, noise can be effectively isolated through a formed vacuum cavity, and the heat insulation effect can be achieved by filling inert gas, so that the tempered glass has good sound insulation and heat insulation effects; the influence of external noise on the life of indoor people is avoided, and indoor heat is prevented from being dissipated to the outside.
Owner:JIANGSU DEJIA GLASS TECH CO LTD

Generator external noise reduction device

The utility model relates to the technical field of fixing supports, in particular to external noise reduction equipment of a generator. The generator comprises a generator body, a fixing device is arranged outside the generator body, the fixing device comprises a fixing seat, the top end of the fixing seat is fixedly connected with the generator body, the bottom end of the fixing seat is fixedly connected with a sound absorption sponge plate, the bottom end of the sound absorption sponge plate is fixedly connected with four telescopic rods, and the telescopic rods are fixedly connected with the generator body. One ends of the four telescopic rods are fixedly connected with the bottom plate, the arc surfaces of the telescopic rods are sleeved with springs, the two ends of the springs are fixedly connected with the sound absorption sponge plate and the bottom plate respectively, the top end of the bottom plate is fixedly connected with two L-shaped plates, and the sides, close to each other, of the two L-shaped plates are fixedly connected with honeycomb noise reduction plates. The problems that a traditional generator vibrates in the working process, certain noise is generated, work of surrounding personnel is affected, and sound pollution is caused by the generated noise are solved.
Owner:FUJIAN EVERSTRONG LEGA POWER EQUIP CO LTD

Splicing type sound insulation building wallboard and splicing method

The invention relates to the technical field of assembly type buildings, in particular to a splicing type sound insulation building wallboard and a splicing method. The splicing type sound insulation building wallboard comprises a fixing plate, sound insulation cotton, a dust suction pipe, an interception net and the like; sound insulation cotton for insulating noise is arranged on the fixing plate; the sound insulation cotton is provided with a plurality of dust suction pipes used for adsorbing dust generated by tile cutting. A connecting cavity is formed in the fixing plate; all the dust suction pipes are communicated with the connecting cavity; an intercepting net for intercepting ceramic tile fragments is arranged on the fixing plate; two fixing strips are arranged on each intercepting net; and two connecting strips are arranged on the fixing plate. A space is independently isolated through the sound insulation building board wall to be used for cutting ceramic tiles, noise generated by cutting the ceramic tiles is prevented from influencing other areas, the bottom annular strip drives the dust suction pipe to adsorb dust attached to the sound insulation building board wall, and the probability that when a door is opened for conveying the ceramic tiles, the dust is wasted is greatly reduced. And the probability that dust adhered to the sound insulation building board wall is raised and dispersed in other areas is reduced.
Owner:GUANGDONG YINGHAI CONSTR ENG CO LTD