CN117184150A - Noise-reducing and sound-insulating large bottom plate - Google Patents
Noise-reducing and sound-insulating large bottom plate Download PDFInfo
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- CN117184150A CN117184150A CN202311179901.7A CN202311179901A CN117184150A CN 117184150 A CN117184150 A CN 117184150A CN 202311179901 A CN202311179901 A CN 202311179901A CN 117184150 A CN117184150 A CN 117184150A
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- 238000009413 insulation Methods 0.000 claims abstract description 30
- 239000006260 foam Substances 0.000 claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 claims abstract description 21
- 239000010410 layer Substances 0.000 claims description 33
- 230000002787 reinforcement Effects 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 229920000742 Cotton Polymers 0.000 claims description 12
- 239000012792 core layer Substances 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000003733 fiber-reinforced composite Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 4
- 239000006261 foam material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 6
- 238000007665 sagging Methods 0.000 abstract description 4
- 210000003205 muscle Anatomy 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004620 low density foam Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Abstract
The utility model provides a noise reduction and sound insulation big bottom plate, includes the hypoplastron, lays the upper plate on the hypoplastron and presss from both sides the sound absorbing layer between hypoplastron and upper plate, hypoplastron and upper plate are foam battenboard, its characterized in that: the upper surface of the lower plate is provided with convex ribs protruding upwards, the edge of the upper plate is provided with turned-over edges turned downwards by 90 degrees, the lower surface of the upper plate and the turned-over edges are respectively bonded with the convex ribs, a cavity is formed between the upper plate and the lower plate, and the sound absorption layer is filled in the cavity. The invention ensures the reliability of noise reduction and sound insulation, the combination of the foam sandwich plate and the sound absorption layer effectively increases the thickness, reduces the density and the weight, and the cooperation of the convex ribs of the lower plate and the flanging of the upper plate effectively improves the integral bending rigidity, effectively avoids the vibration and sagging of the large bottom plate in the loading operation process, forms the large bottom plate with high rigidity, low density, high thickness, light weight and higher weight-counting sound insulation, and meets the use requirement of the large bottom plate of the straddle-type monorail car.
Description
Technical Field
The invention relates to a noise-reducing and sound-insulating large bottom plate, and belongs to the technical field of noise-reducing and sound-insulating pads.
Background
The straddle type monorail transportation is one of urban rail transportation, is a medium-traffic rail transportation system suitable for urban overground space, and is supported, stabilized and guided by a single track, a vehicle body uses rubber tires, and the tires ride on a track beam. The underframe area of the straddle-type monorail car cab is the noise source location, and there are aerodynamic noise, tire noise, impact vibration noise, and the like. During operation of the vehicle, noise in the vicinity of the driver's cabin is large. The large bottom plate in front of the driving platform needs to have a noise reduction function to block noise from the underframe. The existing large base plate of the straddle type monorail car is of a sandwich structure of a panel, a foam sandwich and a panel, the total thickness is about 30mm, and the weight-counting sound insulation amount is within 30 dB; in order to further improve the sound insulation performance, damping slurry is sprayed on the bottom surface after the large bottom plate is loaded, sound absorbing materials are filled, aluminum fiber plates are paved, and the like, so that the sound insulation amount is increased, and the weight-counting sound insulation amount is increased to 35dB; thus, the construction is complex, the period is long, and the weight of the product is greatly increased.
The vibration and noise reduction control of the straddle type monorail car is mainly developed from two aspects of a noise source and a transmission path, and noise reduction measures are mainly dependent on improving the sound insulation characteristic of a car body structure and reducing the energy of medium-high frequency noise in a passenger room. However, as the requirements for acoustic indexes of trains and weight reduction of train bodies become more and more severe, the sound insulation amount of the lifting structure by increasing weight obviously does not meet the overall requirements of train research and development design, especially in the noise source position of the trains, namely the cab area.
Disclosure of Invention
The noise-reducing and sound-insulating large base plate provided by the invention ensures the reliability of noise reduction and sound insulation, the combination of the foam sandwich plate and the sound-absorbing layer effectively increases the thickness, reduces the density and the weight, and the cooperation of the convex ribs of the lower plate and the flanging of the upper plate effectively improves the integral bending rigidity, effectively avoids the vibration and sagging of the large base plate in the loading operation process, forms the large base plate with large rigidity, low density, large thickness, light weight and higher weight-calculating and sound-insulating capacity, and meets the use requirement of the large base plate of the straddle-type monorail car.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a noise reduction and sound insulation big bottom plate, includes the hypoplastron, lays the upper plate on the hypoplastron and presss from both sides the sound absorbing layer between hypoplastron and upper plate, hypoplastron and upper plate are foam battenboard, its characterized in that: the upper surface of the lower plate is provided with convex ribs protruding upwards, the edge of the upper plate is provided with turned-over edges turned downwards by 90 degrees, the lower surface of the upper plate and the turned-over edges are respectively bonded with the convex ribs, a cavity is formed between the upper plate and the lower plate, and the sound absorption layer is filled in the cavity.
Preferably, the ribs are arranged on the edge and the upper surface of the lower plate, the ribs are distributed on the upper surface of the lower plate in a crisscross manner, and the sound absorption layer is paved on the upper surface of the lower plate.
Preferably, the thickness of the lower plate is 5-7 mm, the thickness of the upper plate is three-four times of the thickness of the lower plate, the upper plate and the lower plate both comprise resin-based fiber reinforced composite material panels and foam core layers sandwiched between the two layers of panels, the density of the panels is 1500-2100 kg/m, the thickness is 0.5-1.5 mm, and the density of the foam core layers is 70-300 kg/m.
Preferably, the convex rib and the lower plate are integrally formed, the convex rib at the edge of the lower plate is adhered to the flanging through structural adhesive, the convex rib on the upper surface of the lower plate is adhered to the lower surface of the upper plate through structural adhesive, the width of the convex rib is 20-40 mm, and the height is 30-35mm.
Preferably, the flanging is formed by a panel flanging formed by downwards turning a panel of the upper plate and a whole plate flanging formed by downwards turning the upper plate, wherein the panel flanging is arranged along the width edge of the upper plate, the whole flanging is arranged along the length edge of the upper plate, and the panel flanging and the whole plate flanging are integrally formed, and the flanging is flush with the lower surface of the lower plate.
Preferably, the sound absorption layer comprises a sound insulation pad adhered to the upper surface of the lower plate and sound absorption cotton pressed between the sound insulation pad and the lower surface of the upper plate, the thickness of the sound insulation pad is 1.0-2.0mm, the upper surface of the sound insulation pad is covered with an aluminum skin, and the sound absorption cotton is paved on the aluminum skin.
Preferably, the convex rib at the edge of the lower plate is provided with a mounting hole, the mounting hole upwards penetrates through the upper plate, the upper plate and the lower plate are respectively provided with a mounting hole reinforcing block with strength larger than that of the foam core layer in the foam core layer at the opening position of the mounting hole, the mounting hole reinforcing blocks are clamped between the two layers of panels, and the mounting hole is formed in the mounting hole reinforcing blocks.
Preferably, the mounting hole reinforcing block is an aluminum block or a fiber reinforced resin foaming block with density of 500-800 kg/m.
Preferably, the lower plate in set up the blind hole reinforcement piece, set up in the sound absorbing layer with blind hole reinforcement piece aligned sealing cap, blind hole reinforcement piece and the panel integrated into one piece of lower plate, sealing cap offsets with the blind hole reinforcement piece, upwards offer the blind hole that extends to sealing cap from the blind hole reinforcement piece.
Preferably, a nut is embedded between the blind hole reinforcing block and the sealing cap, an inner hole of the nut is aligned with the blind hole, the sealing cap is made of foam material with the density of 70-300 kg/m, and the surface of the sealing cap is bonded with a panel made of resin-based fiber reinforced composite material and is bonded with the lower surface of the upper plate through structural adhesive.
The invention has the beneficial effects that:
the lower plate and the upper plate in the noise-reducing and sound-insulating large base plate are foam sandwich plates, can form a blocking process and a reflection and absorption process for sound waves and then a blocking attenuation process, the sound-absorbing layer can block and absorb the sound waves to form multi-layer shielding attenuation of the sound waves, the weight-counting and sound-insulating quantity is improved, the reliability of noise reduction and sound insulation is ensured, the combination of the foam sandwich plates and the sound-absorbing layer effectively increases the thickness, reduces the density and the weight, the matching of the convex ribs of the lower plate and the flanging of the upper plate effectively improves the integral bending rigidity, and the large base plate is effectively prevented from vibrating and sagging in the loading operation process, so that the large base plate with high rigidity, low density, high thickness, light weight and higher weight-counting and sound-insulating quantity is formed, and the use requirement of the large base plate of the straddle-type monorail car is met.
The installation holes are formed in the large bottom plate, the installation holes are formed in the installation hole reinforcing blocks, namely, reinforcing treatment is carried out on the periphery of the installation holes, the reinforcing blocks are aluminum blocks or fiber reinforced resin foaming materials with the density of 500-800 kg/m, the local compressive property of the installation holes is effectively improved, the large bottom plate is mechanically connected to the side wall of the vehicle body through the installation holes, the connection strength is effectively improved, and the collapse deformation of the connection part is avoided.
Set up the blind hole reinforcement piece in the hypoplastron, set up the sealed block that aligns with the blind hole reinforcement piece in the sound absorbing layer, the blind hole upwards sets up from the blind hole reinforcement piece and extends to sealed block, pre-buried nut between blind hole reinforcement piece and sealed block, the blind hole reinforcement piece is handled the reinforcement to the nut periphery, effective fixation nut separates inside the large bottom portion and blind hole with sealed block, prevent that steam from entering into inside the large bottom plate along the blind hole, the large bottom plate passes through blind hole connection automobile body chassis or light-duty equipment, guarantee joint strength, improve connection reliability.
Drawings
Fig. 1 is a partial cross-sectional view of a noise reducing and dampening large floor in an embodiment.
Fig. 2 is a schematic view of the lower plate.
Fig. 3 is a schematic view of the upper plate.
Fig. 4 is a schematic view of the noise reduction and insulation large bottom plate with the bottom upward.
Fig. 5 is an enlarged partial cross-sectional view of the ribs in the noise-reducing and sound-insulating large floor panel bonded to the integral flange.
Fig. 6 is an enlarged partial cross-sectional view of the flange bonding of the rib and the panel flange in the noise-reducing and sound-insulating large base plate.
Fig. 7 is an enlarged partial cross-sectional view of the ribs in the noise-reducing and sound-insulating large floor panel bonded to the lower surface of the upper panel.
Fig. 8 is an enlarged partial cross-sectional view of the location of the mounting hole in the noise reducing and dampening large floor panel.
Fig. 9 is an enlarged partial cross-sectional view of the location of a blind hole in a noise reducing and dampening large floor panel.
Detailed Description
Embodiments of the present invention are described in detail below with reference to fig. 1 to 9.
The utility model provides a noise reduction and sound insulation big bottom plate, includes hypoplastron 1, lays the upper plate 2 on hypoplastron 1 and presss from both sides the sound absorbing layer 3 between hypoplastron 1 and upper plate 2, hypoplastron 1 and upper plate 2 are foam sandwich board, its characterized in that: the upper surface of the lower plate 1 is provided with a convex rib 11 protruding upwards, the edge of the upper plate 2 is provided with a turned-over edge 21 turned downwards by 90 degrees, the lower surface of the upper plate 2 and the turned-over edge 21 are respectively adhered to the convex rib 11, a cavity is formed between the upper plate 2 and the lower plate 1, and the sound absorbing layer 3 is filled in the cavity.
The lower plate 1 and the upper plate 2 in the noise-reducing and sound-insulating large bottom plate are foam sandwich plates, the sound waves can be separated and absorbed in a reflection and separation attenuation process, the sound absorption layer 3 is used for separating and absorbing the sound waves, the multi-layer shielding attenuation of the sound waves is formed, the weight-counting sound insulation quantity is improved, the noise-reducing and sound-insulating reliability is ensured, the combination of the foam sandwich plates and the sound absorption layer effectively increases the thickness and reduces the density and the weight, the convex ribs 11 of the lower plate 1 are matched with the flanges 21 of the upper plate 2 to effectively improve the integral bending rigidity, the large bottom plate is effectively prevented from vibrating and sagging in the loading operation process, and the large bottom plate with large rigidity, low density, large thickness, light weight and higher weight-counting sound insulation quantity is formed, so that the use requirement of the straddle-type single rail vehicle large bottom plate is met.
Wherein, protruding muscle 11 set up on the edge and the upper surface of hypoplastron 1, protruding muscle 11 crisscross distribution in the upper surface of hypoplastron, sound absorbing layer 3 lays on the upper surface of hypoplastron 1. The edge and the lower surface of the lower plate 1 are provided with the convex ribs 11, so that the strength of the lower plate is effectively improved, the sound absorbing layer 3 is paved on the upper surface of the lower plate 1 during molding, then the top surface and the side wall of the convex ribs 11 are coated with structural adhesive, and then the convex ribs 11 are bonded with the lower surface of the upper plate 2 and the flange 21.
The thickness of the lower plate is 5-7 mm, the thickness of the upper plate 2 is three-four times of the thickness of the lower plate 1, the upper plate 2 and the lower plate 1 both comprise resin-based fiber reinforced composite material panels and foam core layers clamped between the two layers of panels, the density of the panels is 1500-2100 kg/m, the thickness is 0.5-1.5 mm, and the density of the foam core layers is 70-300 kg/m. The lower plate is a sandwich structure thin plate, the upper plate is a sandwich structure thick plate, the panel is a resin-based fiber reinforced composite material, and the foam core layer is a low-density foam material, so that the formed large bottom plate has large thickness, low sealing and light weight.
Wherein, protruding muscle 11 and lower plate 1 integrated into one piece, protruding muscle 11 at lower plate 1 edge bonds with turn-ups 21 through the structural adhesive, protruding muscle 11 of lower plate 1 upper surface bonds with upper plate 2 lower surface through the structural adhesive, protruding muscle 11's width is 20-40 mm, highly is 30-35mm. The convex rib 11 and the lower plate 1 are integrally formed, so that the forming is simple, the structure is stable, the convex rib 11 cannot be separated from the lower plate 1, the overall bending rigidity is improved, the convex rib 11 is adhered to the lower surface of the upper plate 2 and the flange 21, the convex rib 11 is arranged on the lower surface of the upper plate 2, and the overall strength of a large bottom plate is ensured.
Wherein, turn-ups 21 turn up the panel turn-ups 22 that forms by the panel of upper plate 2 turns over downwards and the whole board turn-ups 23 that the upper plate 2 whole turns over downwards and forms and constitute, panel turn-ups 22 set up along upper plate width edge, whole turn-ups 23 set up along upper plate length edge, and panel turn-ups 22 and whole board turn-ups 23 integrated into one piece, turn-ups 32 flush with lower surface of lower plate 1. The integral flanging 23 is adhered with the convex rib 11, so that the integral bending rigidity of the large bottom plate is further improved.
The sound absorbing layer 3 comprises a sound insulating pad 31 adhered to the upper surface of the lower plate and sound absorbing cotton 32 pressed between the sound insulating pad 31 and the lower surface of the upper plate, the thickness of the sound insulating pad 31 is 1.0-2.0mm, the upper surface of the sound insulating pad 31 is covered with an aluminum skin, and the sound absorbing cotton 32 is paved on the aluminum skin. The area without the ribs 21 on the upper surface of the lower plate is paved with a sound insulation pad 31, then the sound absorption cotton is paved, the sound insulation pad is made of flame retardant rubber, the total thickness of the sound insulation pad is about 1.5mm, the surface density is about 2.3 kg/-square meter, the sound insulation pad has damping characteristics, the fire resistance indexes such as smoke density and smoke toxicity meet the requirements of the EN45545-2 rail transit fire protection standard R23 HL2, the lower surface of the sound insulation pad 31 is adhered with the lower plate, the upper surface is covered with an aluminum skin, the sound absorption cotton 32 is paved on the aluminum skin, the sound absorption cotton 32 is made of glass fiber yarns or carbon fiber yarns, the cotton is in a fluffy state, the sound absorption cotton can be compressed to a certain extent, the density of the sound absorption cotton is lower than 30kg/m, the compression ratio exceeds 30%, the average sound absorption coefficient exceeds 0.6, the heat conduction coefficient is lower than 0.04W/(m.K), the fire resistance meets the requirements of the EN45545-2 rail transit fire protection standard R1 HL3, and the environmental protection performance meets the rail transit related standards.
Wherein, the protruding muscle 11 on the edge of hypoplastron 1 on set up mounting hole 4, mounting hole 4 upwards runs through upper plate 2, upper plate 2 and hypoplastron 1 all set up the mounting hole reinforcement piece 5 that intensity is greater than the foam sandwich layer in the foam sandwich layer of mounting hole open cell position, mounting hole reinforcement piece 5 presss from both sides between two-layer panel, mounting hole 4 is seted up on mounting hole reinforcement piece 5. The mounting hole 4 is formed on the mounting hole reinforcing block 5, namely reinforcing treatment is performed on the periphery of the mounting hole 4, so that the local compressive property of the mounting hole 4 is effectively improved.
Wherein the mounting hole reinforcing block 5 is an aluminum block or a fiber reinforced resin foaming block with density of 500-800 kg/m. The local compressive property of the mounting holes 4 is effectively improved, the large bottom plate is mechanically connected to the side wall of the vehicle body through the mounting holes, the connection strength is effectively improved, and the collapse and deformation of the connection part are avoided.
Wherein, lower plate 1 in set up blind hole reinforcement piece 6, set up in sound absorbing layer 3 with the sealed block 7 of reinforcement piece 6 alignment, blind hole reinforcement piece 6 and the panel integrated into one piece of lower plate 1, sealed block 7 offsets with blind hole reinforcement piece 6, upwards offer the blind hole 8 that extends to sealed block 7 from blind hole reinforcement piece 6. Set up blind hole reinforcement piece 6 in lower plate 1, set up in sound absorbing layer 3 with blind hole reinforcement piece 6 aligned sealing cap 7, blind hole 8 upwards offer from blind hole reinforcement piece 6 and extend to sealing cap 7, separate inside big bottom and blind hole 8 with sealing cap 7, prevent that steam from entering into inside big bottom plate along blind hole 8, big bottom plate passes through blind hole connection automobile body chassis or light-duty equipment.
The blind hole reinforcing block 6 and the sealing cap 7 are embedded with a nut 9, an inner hole of the nut 9 is aligned with the blind hole 8, the sealing cap 7 is made of foam material with density of 70-300 kg/m, and a resin-based fiber reinforced composite material panel is bonded on the surface of the sealing cap 7 and is bonded with the lower surface of the upper plate 2 through structural adhesive. The nut 9 is embedded between the blind hole reinforcing block 6 and the sealing cap 7, the periphery of the nut 8 is reinforced by the blind hole reinforcing block 6, the nut 9 is effectively fixed, the large bottom plate is connected with a vehicle body underframe or light equipment through the nut 9, the connection strength is ensured, and the connection reliability is improved.
The foregoing disclosure of embodiments of the present invention has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a noise reduction and sound insulation big bottom plate, includes the hypoplastron, lays the upper plate on the hypoplastron and presss from both sides the sound absorbing layer between hypoplastron and upper plate, hypoplastron and upper plate are foam battenboard, its characterized in that: the upper surface of the lower plate is provided with convex ribs protruding upwards, the edge of the upper plate is provided with turned-over edges turned downwards by 90 degrees, the lower surface of the upper plate and the turned-over edges are respectively bonded with the convex ribs, a cavity is formed between the upper plate and the lower plate, and the sound absorption layer is filled in the cavity.
2. The noise-reducing and sound-insulating large floor according to claim 1, wherein: the convex ribs are arranged on the edge and the upper surface of the lower plate, the convex ribs are distributed on the upper surface of the lower plate in a crisscross manner, and the sound absorption layer is paved on the upper surface of the lower plate.
3. The noise-reducing and sound-insulating large floor according to claim 2, characterized in that: the thickness of the lower plate is 5-7 mm, the thickness of the upper plate is three-four times of the thickness of the lower plate, the upper plate and the lower plate both comprise resin-based fiber reinforced composite material panels and foam core layers clamped between the two layers of panels, the density of the panels is 1500-2100 kg/m, the thickness is 0.5-1.5 mm, and the density of the foam core layers is 70-300 kg/m.
4. A noise-reducing and sound-insulating large floor according to claim 3, characterized in that: the convex ribs and the lower plate are integrally formed, the convex ribs at the edge of the lower plate are bonded with the flanging through structural adhesive, the convex ribs on the upper surface of the lower plate are bonded with the lower surface of the upper plate through structural adhesive, the width of the convex ribs is 20-40 mm, and the height of the convex ribs is 30-35mm.
5. A noise-reducing and sound-insulating large floor according to claim 3, characterized in that: the flange comprises a panel flange formed by downwards turning a panel of the upper plate and a whole plate flange formed by wholly downwards turning the upper plate, wherein the panel flange is arranged along the width edge of the upper plate, the whole flange is arranged along the length edge of the upper plate, the panel flange and the whole plate flange are integrally formed, and the flange is flush with the lower surface of the lower plate.
6. The noise-reducing and sound-insulating large floor according to claim 1, wherein: the sound absorption layer comprises a sound insulation pad adhered to the upper surface of the lower plate and sound absorption cotton pressed between the sound insulation pad and the lower surface of the upper plate, the thickness of the sound insulation pad is 1.0-2.0mm, the upper surface of the sound insulation pad is covered with an aluminum skin, and the sound absorption cotton is paved on the aluminum skin.
7. The noise-reducing and sound-insulating large floor according to claim 1, wherein: the mounting hole is formed in the convex rib at the edge of the lower plate, the mounting hole penetrates through the upper plate upwards, the upper plate and the lower plate are respectively provided with a mounting hole reinforcing block with strength larger than that of the foam core layer in the foam core layer at the opening position of the mounting hole, the mounting hole reinforcing blocks are clamped between the two layers of panels, and the mounting hole is formed in the mounting hole reinforcing blocks.
8. The noise-reducing and sound-insulating large floor according to claim 7, wherein: the mounting hole reinforcing block is an aluminum block or a fiber reinforced resin foaming block with 500-800 kg/m of density.
9. A noise-reducing and sound-insulating large floor according to claim 3, characterized in that: the lower plate in set up the blind hole reinforcement piece, set up in the sound absorbing layer with the blind hole reinforcement piece aligned sealed block, the panel integrated into one piece of blind hole reinforcement piece and lower plate, sealed block offsets with the blind hole reinforcement piece, upwards offer the blind hole that extends to sealed block from the blind hole reinforcement piece.
10. The noise-reducing and sound-insulating large floor according to claim 9, wherein: the blind hole reinforcing block is embedded with a nut between the blind hole reinforcing block and the sealing cap, the inner hole of the nut is aligned with the blind hole, the sealing cap is made of foam materials with the density of 70-300 kg/m, the surface of the sealing cap is bonded with a panel made of resin-based fiber reinforced composite materials, and the panel is bonded with the lower surface of the upper plate through structural adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311179901.7A CN117184150A (en) | 2023-09-13 | 2023-09-13 | Noise-reducing and sound-insulating large bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311179901.7A CN117184150A (en) | 2023-09-13 | 2023-09-13 | Noise-reducing and sound-insulating large bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117184150A true CN117184150A (en) | 2023-12-08 |
Family
ID=89001247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311179901.7A Pending CN117184150A (en) | 2023-09-13 | 2023-09-13 | Noise-reducing and sound-insulating large bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117184150A (en) |
-
2023
- 2023-09-13 CN CN202311179901.7A patent/CN117184150A/en active Pending
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