33results about How to "Play the effect of sound insulation and noise reduction" patented technology

The invention provides an automobile interior trim part and a forming process for the same. The automobile interior trim part sequentially consists of a composite knitted fabric layer, a fiberglass mat, a PU (polyurethane) foam sheet, the fiberglass mat and a PET (polyethylene terephthalate) material layer from top to bottom. The automobile interior trim part and the forming process for the same have the advantages and positive effects that the cost is lowered, the production efficiency is improved, and the occurrence rate of quality problems is lowered; sound insulation and noise reduction effects can be achieved, and the NVH (noise vibration and harshness) performance of a product assembly can be improved; energy is saved, and the consumption is reduced.

The invention discloses a sound-insulation and noise-reduction protective cover and a mounting method. The sound-insulation and noise-reduction protective cover comprises a steel structure framework,and a front side noise-reduction mechanism, a rear side noise-reduction mechanism, a left side noise-reduction mechanism, a right side noise-reduction mechanism and a top noise-reduction mechanism arearranged on the steel structure framework. The front side noise-reduction mechanism, the rear side noise-reduction mechanism, the left side noise-reduction mechanism and the right side noise-reduction mechanism are formed by splicing of a plurality of vertical sound-insulation plates. At least one of the front side noise-reduction mechanism and the rear side noise-reduction mechanism is providedwith a fireproof sound-insulation door, and at least one of the left side noise-reduction mechanism and the right side noise-reduction mechanism is provided with a sound-attenuation blind window. Thetop noise-reduction mechanism comprises horizontal sound-insulation plates arranged at the two ends and an open-hanging-type sound-insulation plate arranged in the middle. Sound-absorption plates arearranged on the inner sides of the vertical sound-insulation plates, the horizontal sound-insulation plates and the open-hanging-type sound-insulation plate. The problem that noise pollution is causedby power equipment is solved.

The invention relates to a bionic automobile tail fin housing manufacturing method, which comprises the steps of (1) collecting the features of a sparrow's mouth: drawing the longitudinal profile outer contour curve of a sparrow's mouth on a coordinate paper; fitting a longitudinal profile upper contour curve quasi - equation of a sparrow's mouth (formula 1-1); (2) establishing a tail fin housing bionic model: importing the longitudinal profile upper contour curve quasi - equation into SolidWorks to form a bionic curve EF; establishing a datum plane X=151 at the position passing the point E vertical to the bionic curve EF; and establishing a first contour line L in the datum plane; establishing a second contour line M in the datum plane Y=0 plane passing the point F; sampling the first contour line L toward the second contour line M along the bionic curve EF and a straight line VY; establishing a cutting contour line in the datum plane Z=0 for cutting; and then shelling to obtain the bionic model; (3) preparing the tail fin housing: using a model or printing with a 3D printer directly. The tail fin prepared thereby can improve fuel economy and integral streamline greatly.

The invention discloses a reinforced and soundproof building waterproofing agent, and a preparation method and application thereof. The reinforced and soundpoof building waterproofing agent comprisesthe following components in parts by mass: 24 to 36 parts of an acrylate polymer emulsion, 6.5 to 10.5 parts of biomass superfine fiber powder, 7 to 15 parts of a carbon material, 8 to 12 parts of a silicon-containing material, 15 to 25 parts of fluffy high-strength resin and 16.5 to 54.5 parts of a solvent. According to the application of the reinforced and soundproof building waterproofing agent, the reinforced and soundproof building waterproofing agent is arranged on concrete, wherein the contact angle between the concrete and water is 159 degrees, and noise is reduced by about 10.5 dB. The reinforced and soundproof building waterproofing agent provided by the invention adopts environmentally-friendly raw materials, especially the biomass superfine powder taken from plants, so the costis reduced, and the safety of the building waterproofing agent is further improved.

The invention discloses a modular noise reduction installation design structure of a large-span curved surface stainless steel ceiling, and belongs to the technical field of building decoration. The modular noise reduction installation design structure comprises a plurality of first keels, a plurality of second keels, an arc-shaped ceiling plate, a sound insulation mechanism and a sound absorption adjusting mechanism, wherein the first keels are arranged in parallel, the first keels are hung on a top wall base layer through a plurality of first hanging rods, the second keels are arranged in parallel, the second keels are fixedly connected to the bottoms of the first keels, and the second keels are perpendicular to the first keels. According to the modular noise reduction installation design structure, a plurality of V-shaped gypsum boards are hung on the second keels, so that a plurality of small spaces are divided between the arc-shaped ceiling plate and the top wall base layer; and a plurality of sound absorption grooves are formed in the top of the arc-shaped ceiling plate, the noise reduction effect is good, modular clamping installation of the ceiling is realized, so that the tedious operation of bonding the stainless steel ceiling plate on a wood base layer is avoided, the construction is simple and convenient, the construction efficiency is high, and time and labor are saved.

The invention provides a cooking utensil. The cooling utensil comprises a pot body, a pot cover and a sound absorbing box which is arranged on the pot body and is used for releasing steam, wherein the sound absorbing box can be detachably arranged on the pot cover, the sound absorbing box comprises a box seat which is arranged near the pot body, a box cover which covers the box seat and is far away from the pot body, and a sound absorbing layer which is arranged between the box seat and the box cover and is made of flexible sound absorbing material, the sound absorbing layer comprises a separating wall, and the separating wall encloses a steam passage together with the box seat or / and the box cover. According to the technical scheme, the problem that in the prior art, a noise reduction device of an electric pressure cooker is difficult to clean is solved.

The invention discloses an automatic cleaning and disinfecting life water tank. The automatic cleaning and disinfecting life water tank comprises a body which is provided with a water inlet pipeline; a first electromagnetic valve is arranged between the water inlet pipeline and the body; an installing box is arrange in the body and is arranged in a sealed manner; a mixing cavity is formed in the installing box and is connected with a pressurizing device and a chemical box; a chemical adding pump is further arranged between the mixing cavity and the chemical box; a plurality of high-pressure pipelines are further arranged in the body; one end of each high-pressure pipeline is connected with the mixing cavity; the high-pressure pipelines are further provided with a plurality of high-pressure sprayers; the mixing cavity is further connected with a diluting pipeline which is connected with the water inlet pipeline through a second electromagnetic valve; the bottom of the body is connected with a water outlet pipeline through a third electromagnetic valve; and a waste water discharging pipeline is further arranged at the bottom of the body. The automatic cleaning and disinfecting life water tank is reasonable in design, compact in structure and convenient and fast to use, and the interior of the water tank can be automatically cleaned.

The invention provides a sound-proof device and a vehicle. The sound-proof device comprises a blocking piece and a protection cover, wherein the blocking piece is connected with a through hole in a metal plate of a vehicle body; the protection cover at least covers the outside of parts of the blocking piece. The protection cover at least covers the outside of parts of the blocking piece, so that the phenomenon that the whole blocking piece is exposed in the air is avoided, the blocking piece is protected by the protection cover to a certain degree, and the service life of the blocking piece is prolonged. In addition, when noise spreads from a noise source to the protection cover, the protection cover can have certain effects of insulating sound and reducing noise, and when the noise spreads to the blocking piece, the blocking piece can have an effect of secondary noise reduction, so that the noise is further reduced, the possibility that the noise interferes with a driver is decreased, and the safe running of the vehicle is guaranteed accordingly.

The invention discloses a household solid wood floor. The household solid wood floor comprises a first floor body and a second floor body, strip-shaped grooves are formed in the adjacent faces of the first floor body and the second floor body correspondingly, the two grooves are the same in size, an insertion strip is fixedly connected to the middle position in the groove formed in one side of the second floor body, and insertion connection mechanisms are installed at the front end and the rear end of the groove correspondingly, and 5-10cm gaps for mounting the insertion mechanism are reserved at the front and rear ends of the insertion strip and the two ends of the groove. The insertion connection mechanism is additionally arranged on the household solid wood floor, a specified gap is automatically reserved for spliced solid wood floors through the insertion connection mechanism during working, and when adjacent solid wood floors are spliced, the adjacent solid wood floors extrude the insertion connection mechanism, and an upper elastic piece and a lower elastic piece are forced to deform and extrude elastically through guidance displacement, so that flatness is ensured; and in the later physical change process of expansion caused by heat and contraction caused by cold of the solid wood floor, the splicing position is further fixed, and the probability of warping deformation of the solid wood floor is reduced.

The invention belongs to the technical fields of environmental-protection and energy-saving mechanical devices, and especially relates to a high-efficiency and energy-saving mixing device. The high-efficiency and energy-saving mixing device comprises a stirring tank, a supporting rack, a motor storage box, sound insulating sponge, a motor pedestal, a switch, a motor, an emergency stop button, a sealing bearing, a motor shaft, a sun gear, a planetary gear, a tooth profile, stirring vanes, spoilers, a sealing cover and a sealing ring, the motor storage box is arranged at the bottom of the device, the motor is arranged in the motor storage box, the motor is fixed on the motor pedestal, and the switch and the emergency stop button are arranged at the right side of the motor storage box in parallel. The device has the advantages of reasonable structure, high pertinence, realization of bidirectional rotation of the stirring vanes and the spoilers under the driving of the same motor by using the gears transmission, increase of the stirring efficiency, saving of resources, wide application prospect, and suitableness for promotion and application.

The invention provides a dampproof packaging box for plastic materials, and belongs to the field of packaging boxes. The dampproof packaging box comprises a box body, a partition plate is fixedly installed inside the box body, a plurality of through holes are formed inside the partition plate, a dampproof agent layer is arranged at the bottom of the partition plate, a baffle is fixedly installed inside the box body, the bottom of the baffle and the top of the partition plate are fixedly installed, and a plurality of air holes are formed in the baffle. According to the dampproof packaging box for plastic materials, since a drying device is arranged, the ground is affected by damp, the interior of the box body is damped, a heater can remove internal residual dampness, products in the box body are prevented from being affected with damp and producing unpleasant odor, the box body achieves the good waterproof function, the products placed in the box body can be protected, the service lifeof the box body is prolonged, additional economic losses are reduced, applicability is high, the waterproof and dampproof effects can be achieved through a bottom plate, the packaging box is kept a certain distance away from the ground, and rainwater is prevented from entering the packaging box to affect the product quality.

The invention discloses a motor cabin with a variable frequency resonant cavity. The motor cabin with the variable frequency resonant cavity comprises a motor cover, a motor assembly, a motor housing, a clapboard-type silencer and a lower portion base plate. A suction inlet is formed in the top of the motor cover, an exhaust cavity is formed in the outer side of an exhaust gas filter, the variable frequency resonant cavity which is formed by a cavity protruded from the motor cover is formed in the motor cover which is arranged above the exhaust cavity, and the outer wall of the variable frequency resonant cavity is a soft tail end. The clapboard-type silencer is arranged at the intersection position of the outer wall of the motor housing located below the variable frequency resonant cavity and the exhaust cavity, and a plurality of clapboards arranged from top to bottom form a plurality of L-shaped sound eliminating cavities in the clapboard-type silencer. Due to the fact that the soft tail end can move as change of pressure difference of inner pressure and outer pressure, the motor cabin with the variable frequency resonant cavity can eliminate sound aiming at different working conditions.

The invention discloses a 110kV resin casting insulating transformer with a three-phase integrated structure, which comprises a transformer box body and a sunshade box, a box door is mounted on the front surface of the transformer box body through hinges, a heat dissipation cabinet is mounted on the back surface of the transformer box body, the sunshade box is mounted on the top of the transformer box body, two groups of symmetrically arranged driving boxes are mounted on the inner bottom wall of the transformer box body, a metal rod is mounted at the top of each driving box, a winding box is mounted at the top of each metal rod, two groups of parallelly arranged anti-explosion oil tanks are mounted on the inner bottom wall of the transformer box body, and the anti-explosion oil tanks are located between the two groups of driving boxes. According to the invention, by arranging the sun-shading box, the sun-shading and rain-sheltering device can be specified besides providing sun-shading and rain-sheltering services for the device, the phenomenon that the sun-shading and rain-sheltering device is turned over due to wind blowing is avoided, and the sun-shading and rain-sheltering device can be ensured to continuously and stably provide sun-shading and rain-sheltering services for the transformer box body and the heat dissipation cabinet.

The invention discloses a waterproof anti-corrosion heat-preservation decorative plate convenient to install and an installation method thereof, and relates to the technical field of decorative plates. The problems that multiple positions of the decorative plate are installed and fixed, the installation mode is complex, the difficulty of subsequent disassembly is increased, the decorative plate is prone to being damaged, rapid installation of the decorative plate is not facilitated, and the installation efficiency is poor are solved. A trapezoidal installation block is arranged on one side of the decorative plate; three installation holes are formed in the trapezoidal installation block; the installation holes and the trapezoidal installation block are stamped into an integrated structure; a connecting groove is formed in the other side of the decorative plate; three connecting columns are arranged in the connecting groove; the connecting groove is matched with the trapezoidal installation block; a rubber strip is arranged above the trapezoidal installation block; four grooves are formed in the lower end of the decorative plate; and the grooves and the decorative plate are stamped into an integrated structure.

The invention discloses a heat insulation PVC wallboard and a production process thereof. The heat insulation PVC wallboard comprises a first base plate and a second base plate, a heat insulation layer is arranged between the first base plate and the second base plate, and the first base plate and the second base plate are attached to and fixedly connected to the two faces of the heat insulation layer; and a printing layer is arranged on the upper surface of the first base plate, a foaming layer is arranged on the upper surface of the printing layer, a protective layer is arranged on the uppersurface of the foaming layer, and a glass fiber reinforced plastic paint layer is arranged on the upper surface of the protective layer. In addition, the invention further discloses a production process of the heat insulation PVC wallboard.

The bypass cavity support comprises a middle support, a front support is arranged on the left side of the middle support, the front support and the middle support are tightly welded, a front cover supporting steel plate is arranged on the upper surface of the front support, and the front cover supporting steel plate and the front support are tightly attached. According to the bypass cavity with the sound insulation function, a foaming material is arranged in the sound insulation block, the cavity is filled through foaming expansion of the foaming material, the sound insulation and noise reduction effects are achieved, a sponge sealing strip is bonded to the outer surface of the middle support in an adhesive mode, and the inner side of the sponge sealing strip is tightly attached to the middle support; by means of the structure, the effect of preliminarily sealing the bypass cavity can be achieved, the sponge sealing adhesive tape can achieve a certain sound absorption effect, meanwhile, the baffle is fixedly connected with the inner wall of the inner cavity, the bypass cavity can be further sealed in a segmented mode, and therefore the whole bypass cavity is in a closed environment, and noise generated by air flow can be reduced.

A musical instrument mobile power supply includes a dust cover, a mounting panel and a mounting housing. A surface of the mounting panel on one side of the LED electric quantity display screen is sequentially provided with a first musical instrument connecting wire jack and a second musical instrument connecting wire socket, and a first connection power switch button and a second connection powerswitch button are respectively installed on the surface of the mounting panel on one side of the first musical instrument connecting wire jack and the second musical instrument connecting wire jack, adustproof cover is installed on one end of the surface of the mounting panel close to the second musical instrument connecting wire jack through a hinge shaft, a mounting through hole on the outsideof the heat dissipation fan is provided with a dust filtering fences a large-capacity lithium battery pack is mounted inside the first mounting cavity, and a PVC circuit board is mounted inside the second mounting cavity through a mounting limit clamping slot. The invention has a series of structures so that the mobile battery of the musical instrument can simultaneously power two musical instruments and the like.

The invention discloses a multifunctional nursing bed capable of assisting old people. The multifunctional nursing bed capable of assisting old people comprises a bed body, adjusting cylinders and a bed board, wherein the bed body is a main outer frame structure of the equipment; a linkage frame is arranged at the top end of the bed body; supporting legs are symmetrically arranged at the bottom end of the bed body; a movable shaft is connected to the outer surface of the bed body; a guide rail is formed on the bottom surface of the bed body; the adjusting cylinders are located at the left end and the right end of the bed body, and locking rotary knobs are arranged in the adjusting cylinders; and the bed board is located on the top surface of the bed body, and a mattress is installed in the bed board. According to the multifunctional nursing bed capable of assisting old people, the bed board and a baffle are arranged on the outer surfaces of the two ends of a transmission frame and driven by the weight of a patient, so that a rack and a gear are meshed for transmission; the bed board and the baffle are ascended and descended in an up-down mode, and a moving rod and a spring at the bottom end of the bed board are used for buffering, so that the comfort of the nursing bed is improved; and meanwhile, the baffle not only can prevent the patient from falling off from the bed, but also can take the effects of sound insulation and noise reduction and improves the sleeping quality of the patient.

The invention discloses a small gasoline engine with an energy storage device, which relates to the technical field of gasoline engines, and comprises a gasoline engine body and a reduction box arranged inside. An energy storage box is fixedly arranged on the side of the gasoline engine body, and An assembly inner box is fixedly installed, a cooling cavity is provided between the energy storage box and the assembly inner box, a bearing seat is arranged inside the assembly inner box, an energy storage battery is arranged at the upper end of the bearing seat, and the cooling cavity The inner position of the cavity is filled with cooling liquid, and the inner bottom of the assembly inner box is fixedly provided with a positioning column. The present invention dissipates the heat generated by the energy storage battery into the assembly inner box, and the cooling liquid in the cooling cavity can cool the assembly The heat in the inner box is quickly cooled to effectively prevent heat accumulation from being too high and easily affect the normal use of the energy storage battery. The spring can buffer and protect the energy storage battery to prevent the energy storage battery from being easily damaged during use.

The invention provides a sound-proof device and a vehicle. The sound-proof device comprises a blocking piece and a protection cover, wherein the blocking piece is connected with a through hole in a metal plate of a vehicle body; the protection cover at least covers the outside of parts of the blocking piece. The protection cover at least covers the outside of parts of the blocking piece, so that the phenomenon that the whole blocking piece is exposed in the air is avoided, the blocking piece is protected by the protection cover to a certain degree, and the service life of the blocking piece is prolonged. In addition, when noise spreads from a noise source to the protection cover, the protection cover can have certain effects of insulating sound and reducing noise, and when the noise spreads to the blocking piece, the blocking piece can have an effect of secondary noise reduction, so that the noise is further reduced, the possibility that the noise interferes with a driver is decreased, and the safe running of the vehicle is guaranteed accordingly.

The invention discloses a three-dimensional numerical control carving machine. The three-dimensional numerical control carving machine comprises a carving machine body and a carving table. An electromagnetic plate is arranged on the surface of the carving table. Air suction holes are formed on the surface of the electromagnetic plate. A scrap collection box is arranged at the lower end of a rear baffle. A wind guide plate is arranged on the side, away from the rear baffle, of the electromagnetic plate. Wind blowing holes are formed in the surface of the wind guide plate. An air blower is arranged in the carving table. A wind discharging pipe is arranged between the air blower and the wind guide plate. A power box is arranged at the bottom end inside the carving table. A positive wire and anegative wire are connected to the two ends of the power box correspondingly. A fixing frame is arranged above the power box. A sucking pump is arranged in the fixing frame. A sucking pipe is arranged on the sucking pump. According to the three-dimensional numerical control carving machine, waste residue and scraps on the surface of the object being carved can be cleared in time and collected anddisposed when the carving machine is working; the condition that waste residue and scraps influence the carving effect is effectively avoided; moreover, different fixing modes can be applied to different objects carved; and applicability is high.

The invention discloses a three-dimensional numerical control carving machine. The three-dimensional numerical control carving machine comprises a carving machine body and a carving table. An electromagnetic plate is arranged on the surface of the carving table. Air suction holes are formed on the surface of the electromagnetic plate. A scrap collection box is arranged at the lower end of a rear baffle. A wind guide plate is arranged on the side, away from the rear baffle, of the electromagnetic plate. Wind blowing holes are formed in the surface of the wind guide plate. An air blower is arranged in the carving table. A wind discharging pipe is arranged between the air blower and the wind guide plate. A power box is arranged at the bottom end inside the carving table. A positive wire and anegative wire are connected to the two ends of the power box correspondingly. A fixing frame is arranged above the power box. A sucking pump is arranged in the fixing frame. A sucking pipe is arranged on the sucking pump. According to the three-dimensional numerical control carving machine, waste residue and scraps on the surface of the object being carved can be cleared in time and collected anddisposed when the carving machine is working; the condition that waste residue and scraps influence the carving effect is effectively avoided; moreover, different fixing modes can be applied to different objects carved; and applicability is high.

The invention discloses a non-descending plate same-floor drainage system. The same-floor drainage system comprises a plurality of appliance drainage pipes and a same-floor drainage function module, wherein the same-floor drainage function module is fixedly connected with a floor slab, the same-floor drainage function module comprises a module box with an opening in the top side and preset pipe fittings, the preset pipe fittings comprise a multi-channel floor drain, a trap, a three-way pipe fitting and a drainage vertical pipe, the lower part of the three-way pipe fitting, the lower part of the multi-channel floor drain and the trap are all arranged in the module box, a filling material is arranged between the preset pipe fittings arranged in the module box and the inner wall of the modulebox, the multi-channel floor drain comprises a barrel and at least one water inlet branch pipe connected with the side wall of the barrel, the top side and the bottom side of the barrel are open, thebottom side of the barrel is connected with the water inlet end of the trap, the water outlet end of the trap is connected with a transverse pipe of the three-way pipe fitting, the top of the three-way pipe fitting is connected with a drainage vertical pipe, and at least one water inlet branch pipe communicates with one appliance drain pipe. According to the scheme, the non-descending plate same-floor drainage system can be applied to different types of systems, and floor plate descending is not needed in a toilet.

The invention discloses a new automobile sound insulation foaming reinforcing material, and relates to the technical field of automobiles. The new automobile sound insulation foaming reinforcing material comprises a first plate and a second foaming body sheet, a first foaming body sheet is arranged below the first plate, a second plate is arranged below the first foaming body sheet, a third plateis arranged below the second foaming body sheet, and the second foaming body sheet is positioned below the second plate. According to the sound insulation foaming reinforcing material, the material, the first plate, the second plate and the third plate form a mixed structure, so that the aims of increasing the structural rigidity and reducing the structural weight are achieved, moreover, the effects of sound insulation and noise reduction are achieved, the raw materials are relatively cheap and mainly take mainly short-cut carbon fibers as the main part and are mixed with a foaming matrix, a large-range application can also play the effect of effectively recycling carbon fiber waste materials, and the new automobile sound insulation foaming reinforcing material can effectively improve thestructural rigidity.

The invention discloses a preparation method of a high-strength porous sound insulation board and belongs to the field of sound insulation materials. The preparation method is characterized in that directional pore-forming balls for pore forming are added into raw materials, wherein the directional pore-forming balls are decomposed due to internal heating and gradually expand into an ellipsoidal shape from a spherical shape to form a plurality of ellipsoidal closed air holes in the same distribution direction in the raw materials so as to greatly enhance the compressive mechanical strength of the material in the one-way stress load direction, linear extension is carried out in the horizontal direction while the directional pore-forming balls expand so as to achieve mutual winding of the adjacent directional pore-forming balls, and after secondary heating and melting, a plurality of irregular and disordered pore channels for connecting adjacent pores are generated between the adjacent directional pore-forming balls so as to communicate the closed pores and greatly enhance the sound absorption and sound insulation effects of the material, so that the material can be suitable for environments with higher requirements on sound insulation and one-way mechanical strength, and the application range of the material is effectively expanded.

The invention relates to a bionic automobile tail fin housing manufacturing method, which comprises the steps of (1) collecting the features of a sparrow's mouth: drawing the longitudinal profile outer contour curve of a sparrow's mouth on a coordinate paper; fitting a longitudinal profile upper contour curve quasi - equation of a sparrow's mouth (formula 1-1); (2) establishing a tail fin housing bionic model: importing the longitudinal profile upper contour curve quasi - equation into SolidWorks to form a bionic curve EF; establishing a datum plane X=151 at the position passing the point E vertical to the bionic curve EF; and establishing a first contour line L in the datum plane; establishing a second contour line M in the datum plane Y=0 plane passing the point F; sampling the first contour line L toward the second contour line M along the bionic curve EF and a straight line VY; establishing a cutting contour line in the datum plane Z=0 for cutting; and then shelling to obtain the bionic model; (3) preparing the tail fin housing: using a model or printing with a 3D printer directly. The tail fin prepared thereby can improve fuel economy and integral streamline greatly.