Composite impact sound insulation panel

Abstract

The application discloses a kind of composite impact sound insulation board, belong to impact sound insulation board technical field, by using roof, buffer assembly, middle frame, buffer pad and sound insulation bottom plate composite design, reach with impact and sound insulation effect.The wear-resistant plate material of the outer plate of roof can be changed to change its wear resistance.The material of buffer plate includes but is not limited to damping rubber, damping silica gel, damping paint, inorganic elastic material, etc., buffer hole is designed in the buffer plate, channels are arranged between buffer holes, the buffer hole is caused by micro-deformation of buffer plate, volume change occurs, to improve the energy absorption effect of structure itself;On the other hand, increase damping particles in buffer hole, when buffer plate micro-deformation changes the volume of internal cavity, it causes damping particles to displace, the destruction and reorganization of force chain structure system is generated by the relative displacement between damping particles, to improve the drop performance of the structure by consuming kinetic energy generated by vibration impact.

Description

Technical Field

[0001] This invention relates to the field of impact-resistant sound insulation board technology, and in particular to a composite impact-resistant sound insulation board. Background Technology

[0002] Due to the unique characteristics of impact loads—short duration and high energy—the structure must possess strong plastic deformation capabilities to absorb energy and achieve impact resistance, thus reducing threats to life and property. Furthermore, these impact-resistant panels must also have high sound insulation properties to effectively control the significant impact noise generated during impacts. For example, impact-resistant panels used in steelmaking, metallurgy, and coal mining require not only wear resistance and impact resistance but also sound insulation properties.

[0003] However, existing impact-resistant sound insulation panels are multi-layered to meet multiple functions, resulting in an overall heavy and easily broken sound insulation panel that is not easy to dissipate stress on its own. Summary of the Invention

[0004] The present invention proposes a composite impact-resistant sound insulation board, which is designed by combining multiple boards to achieve the functions of impact resistance and sound insulation.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A composite impact-resistant sound insulation board includes a top plate, a buffer assembly, a middle frame, and a sound insulation base plate. The buffer assembly is located within the middle frame, which is situated between the top plate and the sound insulation base plate. The buffer assembly includes at least one elastic sheet. A buffer plate is disposed inside the top plate. Both the buffer plate and the elastic sheet are made of elastic material. The elastic sheet has a fixed end, a contact end, and a deformable end. The deformable end is arc-shaped and located on both sides of the contact end. The fixed end is located on the other side of the deformable end. The middle portion of the middle frame is hollow, and a frame plate is disposed at one end of the middle frame away from the top plate. The fixed end is fixed to the middle frame, and the contact end contacts the buffer plate of the top plate. When the buffer plate is impacted and undergoes elastic deformation, the contact end is squeezed by the buffer plate, causing the deformable end to also undergo elastic deformation.

[0007] A preferred embodiment of the present invention is that the buffer plate has buffer holes, and the buffer holes are filled with damping particles.

[0008] A preferred embodiment of the present invention is that the buffer hole is provided with a filling part and a pressing part, the filling part and the pressing part are offset from each other, and a channel is provided between the filling part and the pressing part to make the pressing part and the filling part communicate; the channel is provided on both sides of the pressing part, each channel is connected to one filling part, and the filling parts are not connected to each other, and the width of the channel is greater than the particle size of the damping particle.

[0009] A preferred embodiment of the present invention is that a push rod and a push plate are disposed on the contact end, one end of the push rod is fixed on the contact end, the other end of the push rod is connected to the push plate, and the push rod and the push plate are slidably installed in the pressing part; the push plate abuts against both sides of the pressing part, and the damping particles fill the side of the push plate away from the push rod.

[0010] A preferred embodiment of the present invention is that a buffer pad is disposed between the buffer assembly and the sound insulation base plate, and the buffer pad is made of a flexible material.

[0011] A preferred embodiment of the present invention comprises a sound-insulating base plate having two outer shell plates, a weight block, an inner frame, and a membrane disposed between the two outer shell plates, the membrane being fixed within the inner frame, the weight block being fixed to the membrane, and the resonant frequency of the resonant unit of the sound-insulating base plate being... Where k is the tension of the film itself, and m is the equivalent mass of the weight.

[0012] A preferred embodiment of the present invention is that the buffering effect of the damping particles is calculated using the following formula: Wherein, the particle size of the damping particle is d, the surface restitution coefficient of the damping particle is α, the filling rate of the damping particle in the buffer hole is τ, the impact frequency is f, the impact vibration assignment is A, the modal participation factor of the composite impact-resistant sound insulation board is ɡ, the stiffness of the push plate is K, the total mass of the damping particles is m, and the buffering energy of the damping particles is Z.

[0013] A preferred embodiment of the present invention is that the top plate is further provided with an outer plate, the buffer plate is installed between the two outer plates, the outer plate is made of wear-resistant material, and the buffer plate is made of damping rubber, damping silicone, damping coating or inorganic elastic material.

[0014] A preferred embodiment of the present invention is that the frame of the intermediate frame is configured as a cavity or is provided with a layer of sound-absorbing material.

[0015] A preferred embodiment of the present invention is that the top plate, the buffer assembly, the intermediate frame, the buffer pad, and the sound insulation base plate are connected by bolts, and the bolts are located around the top plate, the buffer assembly, the intermediate frame, the buffer pad, and the sound insulation base plate; the push plate is slidably connected to the bolts.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) By using a composite design of a top plate, a buffer assembly, a middle frame, a buffer pad and a sound insulation base plate, a multifunctional structure of particle damping composite metamaterial for impact sound insulation is realized.

[0018] (2) By using a composite design consisting of a top plate, buffer components, a middle frame, a buffer pad, and a sound-insulating base plate, the system achieves both impact resistance and sound insulation. The wear resistance can be altered by changing the material of the wear-resistant plate in the outer panel of the top plate. The materials used for the buffer plate include, but are not limited to, damping rubber, damping silicone, damping coatings, and inorganic elastic materials, which can also modify the buffering performance.

[0019] (3) Buffer holes are designed inside the buffer plate, and channels are set between the buffer holes. The buffer plate undergoes slight deformation, which causes the buffer holes to change in volume and enhances the energy absorption of the structure itself. On the other hand, damping particles are added inside the buffer holes. When the buffer plate undergoes slight deformation and changes the volume of the internal cavity, the damping particles will be displaced. The relative displacement between the damping particles will be used to generate the destruction and reorganization of the force chain structure system, which consumes the kinetic energy generated by vibration and impact to improve the shock reduction performance of the structure.

[0020] (4) The configuration parameters of the damping particles can be designed according to the magnitude of the impact energy. Combined with the structural stiffness of the particle damping energy-absorbing buffer holes, the particle size, filling rate, and surface recovery coefficient of the damping particles are calculated. After calculating the optimal ratio, the impact-reducing sound insulation board of the particle damping composite metamaterial has the best energy absorption and buffering effect.

[0021] (5) The middle frame can provide a cavity structure to introduce an air layer or a sound-absorbing material layer. An air layer is designed inside the particle-damped composite metamaterial impact-reducing sound insulation panel. Multiple reflections of sound waves at the two interfaces of the air medium layer dissipate sound wave energy, effectively isolating the structural propagation of noise. Additionally, sound-absorbing material can be filled into the internal cavity to further increase the multiple reflections of sound waves at the sound-absorbing medium layer, thereby further improving the sound insulation.

[0022] (6) The main function of the thin-film metamaterial sound insulation base plate provided in this invention is a local resonance system formed by the frame structure, the thin film and the heavy block. When the frequency of the sound wave matches the frequency of the thin film resonance, the resonant unit formed by the frame, the thin film and the heavy block generates a negative mass effect near the resonance frequency, realizing a low-frequency sound wave band gap, thereby having the sound insulation and vibration reduction effect of low-frequency noise; it can completely solve the dilemma of the sound insulation board being constrained by the "mass law". Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0024] Figure 1 This is an exploded schematic diagram of the overall structure of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0025] Figure 2 This is an exploded schematic diagram of the overall structure of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0026] Figure 3 This is an exploded schematic diagram of the overall structure of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the overall structure of the sound insulation base plate of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the overall structure of the sound insulation base plate of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0029] Figure 6 This is a front view of the overall structure of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0030] Figure 7 The composite impact-resistant sound insulation board provided in the specific embodiments of the present invention Figure 6 AA section view in the middle;

[0031] Figure 8 This is a three-dimensional view of the overall structure of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0032] Figure 9 This is a side view of the overall structure of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention;

[0033] Figure 10 This is a cross-sectional view of the composite impact-resistant sound insulation board provided in a specific embodiment of the present invention when subjected to impact;

[0034] In the picture:

[0035] 1. Top plate; 11. Buffer plate; 111. Buffer hole; 1111. Filling part; 1112. Pressing part; 1113. Channel; 12. Outer plate; 2. Buffer assembly; 21. Elastic sheet; 211. Fixed end; 212. Contact end; 2121. Push rod; 2122. Push plate; 213. Deformation end; 3. Middle frame; 31. Frame; 32. Frame plate; 4. Sound insulation base plate; 41. Outer shell plate; 42. Weight block; 43. Inner frame; 44. Membrane; 5. Damping particles; 6. Buffer pad; 7. Bolt. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1-10As shown, the present invention provides a composite impact-resistant sound insulation board, including a top plate 1. The top plate 1 mainly consists of an outer plate 12 and a buffer plate 11. The outer plate 12 is made of wear-resistant material. By increasing wear resistance, materials such as nylon and ductile cast steel are used to solve the defects of insufficient wear resistance of conventional boards. A double-layer sandwich structure is used, and the buffer plate 11 is set in the middle of the double-layer outer plate 12, which can effectively absorb the kinetic energy generated when subjected to impact and collision, and achieve the effect of energy absorption and buffering. A buffer hole 111 is designed inside the buffer plate 11. Upon impact, the energy-absorbing buffer hole 111 can undergo slight deformation to enhance the energy absorption and buffering effect. Damping particles 5 are placed inside the buffer hole 111. When impact vibration is transmitted to the damping particles 5 inside the energy-absorbing buffer hole 111, the particles collide and rub against each other. The damping particles 5 convert the kinetic energy generated by the impact vibration into the elastic energy and thermal energy of the damping particle system, effectively reducing the propagation of impact vibration energy. Furthermore, a channel is set inside the buffer hole 111. When the buffer hole 111 undergoes slight deformation, causing a change in the volume of the internal cavity, the volume change of the energy-absorbing buffer hole 111 causes a change in the displacement of the damping particles 5. Because the particle system is a geometrically highly nonlinear body, the contact between particles or between particles and the wall of the energy-absorbing buffer hole 111 is point contact or micro-surface contact. When the damping particles 5 undergo displacement changes, the force chain structure of the interaction between particles and between particles and the container wall changes. At this time, the impact energy is transmitted in the form of a force chain during the transmission process from the energy-absorbing buffer hole 111 to the damping particles 5. The impact energy disrupts the original force chain structure system of the damping particles and forms a new force chain structure system. In this process, the destruction and reorganization of the force chain structure system consumes the kinetic energy generated by the vibration and impact, thus achieving the effect of vibration reduction and impact mitigation.

[0039] The selection of damping particle 5 can be achieved through the following calculation formula: The following parameters are selected: the particle size of damping particle 5 is d, the surface restitution coefficient of damping particle 5 is α, the filling rate of damping particle 5 in buffer hole 111 is τ, the impact frequency is f, the impact vibration assignment value is A, the modal participation factor of composite impact-resistant sound insulation board is g, the stiffness of push plate 2122 is K, the total mass of damping particle 5 is m, and the buffering energy of damping particle 5 is Z.

[0040] It also includes a buffer assembly 2. The elastic sheet 21 of the buffer assembly 2 is provided with a push rod 2121 and a push plate 2122. The push rod 2121 is linked with the damping particles 5 inside the buffer plate 11 through the hole of the push rod 2121 to increase the damping effect. When the buffer assembly 2 is deformed by the impact force, the push rod 2121 and the push plate 2122 will squeeze the damping particles 5 inside the buffer hole 111 due to the elasticity of the buffer hole 111 and the buffer assembly 2 itself. This causes the damping particles 5 to generate a reverse friction damping force, which cancels out the impact force, thereby achieving the buffering effect.

[0041] The top plate 1, through structural design and composite damping materials, overcomes the shortcomings of conventional impact-reducing plates with limited functionality. The buffer plate 11 must possess elasticity, allowing the buffer holes 111 to deform, and the damping particles 5 within its internal cavity to move within the cavity. The buffer assembly 2 uses a push rod 2121 and a push plate 2122 to compress the damping particles 5 within the cavity.

[0042] The buffer assembly 2 is equipped with an elastic sheet 21, which is made of an elastic material such as spring steel. The elastic sheet 21 has a fixed end 211 for fixing to the object or structural surface subjected to force. It also includes a deformable end 213 and a contact end 212. The deformable end 213 is arc-shaped, and the buffer stiffness of the elastic sheet 21 can be adjusted by changing the arc angle of the deformable end 213 to achieve different buffering effects. One end of the push rod 2121 is mounted on the contact end 212, and the other end supports the push plate 2122. When the top plate 1 is subjected to impact, the elasticity of the buffer plate 11 causes it to recover, which in turn drives the push rod 2121 and the push plate 2122 to compress the damping particles 5 inside the buffer hole 111. This causes the damping particles 5 to generate a reverse frictional damping force, which cancels out the impact force, thereby achieving a buffering effect.

[0043] The intermediate frame 3 mainly consists of a frame 31 and a frame plate 32. The intermediate frame 3 is hollow in the middle. The functions of the intermediate frame 3 are twofold: firstly, to connect the top plate 1 and the sound insulation base plate 4; secondly, to provide an air layer between the top plate 1 and the sound insulation base plate 4; and thirdly, to provide space for the buffer assembly 2 to be installed between the top plate 1 and the intermediate frame 3. Porous sound-absorbing material can be installed inside the intermediate frame 3 to enhance the sound insulation function.

[0044] The buffer pad 6 is made of flexible materials, including but not limited to rubber, silicone, non-metallic materials, and organic materials. It is mainly a flexible and elastic material, and its main function is to isolate the transmission of elastic waves. On the one hand, elastic waves mainly originate from external noise sources; on the other hand, vibration noise generated when the top plate 1 is impacted is transmitted through the rigid structure. Adding flexible and elastic materials in the noise transmission path can effectively block the transmission of elastic waves, thereby reducing the transmission of vibration noise.

[0045] The soundproof base plate 4 mainly consists of an outer shell plate 41, a weight block 42, an inner frame 43, and a membrane 44. The membrane 44 is fixed to one side of the frame 31, and the weight block 42 is placed in the groove formed by the membrane 44 and the frame 31, and the weight block 42 is fixed to the membrane 44, forming a membrane 44 type local resonant unit. The fixing methods of the membrane 44 and the frame 31 include, but are not limited to, bonding, riveting, and bolt connection. The fixing methods of the membrane 44 and the weight block 42 include, but are not limited to, bonding, riveting, and bolt connection. The outer shell plate 41 is fixed to both sides of the membrane 44 type local resonant unit to protect the membrane 44 type local resonant unit. The main working principle of the sound insulation base plate 4 is the local resonance system formed by the frame structure 31, the membrane 44, and the weight block 42. When the frequency of the sound wave matches the resonant frequency of the membrane 44, the resonant unit formed by the frame 31, the membrane 44, and the weight block 42 generates a negative mass effect near the resonant frequency, realizing a low-frequency sound wave bandgap, thereby achieving the sound insulation and vibration reduction effect of low-frequency noise; the resonant frequency of the resonant unit of the sound insulation base plate 4... Where k is the tension of the membrane 44 itself, and m is the equivalent mass of the weight block 42.

[0046] In summary, the composite impact-resistant sound insulation board provided in this invention includes a top plate 1, a buffer assembly 2, a middle frame 3, a buffer pad 6, and a sound insulation base plate 4. The buffer assembly 2 is installed inside the middle frame 3, and the top plate 1, the buffer assembly 2, the middle frame 3, the buffer pad 6, and the sound insulation base plate 4 are connected together by bolts 7.

[0047] The top plate 1 is equipped with a buffer plate 11 and an outer plate 12. The buffer plate 11 is located between the two outer plates 12 and is made of elastic material. The buffer plate 11 has a buffer hole 111, which is filled with damping particles 5. The buffer hole 111 is equipped with a filling part 1111 and a pressing part 1112. A channel 1113 is provided between the filling part 1111 and the pressing part 1112, so that the damping particles 5 can move between the filling part 1111 and the pressing part 1112 when they are compressed. At the same time, a push plate 2122 is also provided in the buffer hole 111. The push plate 2122 is located in the filling part 1111 and slides on the side wall of the filling part 1111. When the bolt 7 passes through the push plate 2122, the push plate 2122 is slidably mounted on the bolt 7, which can push the damping particles 5, and the damping particles 5 cannot pass through. Push plate 2122 enters the other side of push plate 2122. Push rod 2121 is also fixed on push plate 2122. Push rod 2121 is installed on the contact end 212 of elastic sheet 21 in buffer assembly 2. When it is subjected to impact deformation, the elastic deformation of buffer hole 111 causes damping particle 5 to move through channel 1113, squeezing push plate 2122 to move towards buffer assembly 2, causing the deformed end 213 of elastic sheet 21 to also undergo elastic deformation. At this time, after the deformed end 213 is deformed by impact force, when it recovers due to the elasticity of buffer hole 111 and buffer assembly 2 itself, it drives push rod 2121 and push plate 2122 to squeeze damping particle 5 in buffer hole 111, causing damping particle 5 to generate reverse friction damping force. It moves through channel 1113 to restore the state before impact, canceling the impact force, thereby achieving the buffering effect.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes that element.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. The present invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A composite impact-resistant sound insulation board, characterized in that: It includes a top plate (1), a buffer assembly (2), a middle frame (3) and a soundproof base plate (4), wherein the buffer assembly (2) is located inside the middle frame (3) and the middle frame (3) is located between the top plate (1) and the soundproof base plate (4); The buffer assembly (2) includes at least one elastic sheet (21), and a buffer plate (11) is disposed inside the top plate (1). Both the buffer plate (11) and the elastic sheet (21) are made of elastic material. The elastic sheet (21) is provided with a fixed end (211), a contact end (212) and a deformable end (213). The deformable end (213) is configured to be arc-shaped. The deformable end (213) is located on both sides of the contact end (212), and the fixed end (211) is located on the other side of the deformable end (213). The middle part of the middle frame (3) is hollow, and a frame plate (32) is provided at the end of the middle frame (3) away from the top plate (1). The fixed end (211) is fixed on the middle frame (3), and the contact end (212) contacts the buffer plate (11) of the top plate (1). When the buffer plate (11) is subjected to impact and undergoes elastic deformation, the contact end (212) is squeezed by the buffer plate (11), causing the deformed end (213) to also undergo elastic deformation. The buffer plate (11) has a buffer hole (111) and the buffer hole (111) is filled with damping particles (5). The buffer hole (111) is provided with a filling part (1111) and a pressing part (1112). The filling part (1111) and the pressing part (1112) are offset from each other. A channel (1113) is provided between the filling part (1111) and the pressing part (1112) so that the pressing part (1112) and the filling part (1111) are connected. The channels (1113) are arranged on both sides of the pressing part (1112), each channel (1113) is connected to a filling part (1111), and the filling parts (1111) are not connected to each other. The width of the channel (1113) is greater than the particle size of the damping particle (5). The contact end (212) is provided with a push rod (2121) and a push plate (2122). One end of the push rod (2121) is fixed on the contact end (212), and the other end of the push rod (2121) is connected to the push plate (2122). The push rod (2121) and the push plate (2122) are slidably installed in the pressing part (1112). The push plate (2122) abuts against both sides of the pressing part (1112), and the damping particles (5) fill the side of the push plate (2122) away from the push rod (2121).

2. The composite impact-resistant sound insulation board according to claim 1, characterized in that: A buffer pad (6) is disposed between the buffer assembly (2) and the sound insulation base plate (4), and the buffer pad (6) is made of a flexible material.

3. The composite impact-resistant sound insulation board according to claim 1, characterized in that: The sound insulation base plate (4) is equipped with two outer shell plates (41), and a weight block (42), an inner frame (43) and a film (44) are arranged between the two outer shell plates (41). The film (44) is fixed inside the inner frame (43), and the weight block (42) is fixed on the film (44). The resonant frequency of the resonant unit of the sound insulation base plate (4) , where k is the tension of the film (44) itself, and m is the equivalent mass of the weight block (42).

4. The composite impact-resistant sound insulation board according to claim 1, characterized in that: The formula for calculating the buffering effect of the damping particle (5) is as follows: ； Wherein, the particle size of the damping particle (5) is The surface restitution coefficient of the damping particle (5) is α, the filling ratio of the damping particle (5) in the buffer hole (111) is τ, the impact frequency is ƒ, the impact vibration assignment is A, the modal participation factor of the composite impact-resistant sound insulation board is g, the stiffness of the push plate (2122) is K, the total mass of the damping particle (5) is m, and the buffering effect of the damping particle (5) is .

5. The composite impact-resistant sound insulation board according to claim 1, characterized in that: The top plate (1) is also equipped with an outer plate (12), and the buffer plate (11) is installed between the two outer plates (12), the outer plates (12) being made of wear-resistant material.

6. The composite impact-resistant sound insulation board according to claim 1, characterized in that: The frame (31) of the intermediate frame (3) is set as a cavity or is equipped with a sound-absorbing material layer.

7. The composite impact-resistant sound insulation board according to claim 2, characterized in that: The top plate (1), the buffer assembly (2), the middle frame (3), the buffer pad (6), and the sound insulation base plate (4) are connected by bolts (7), and the bolts are located around the top plate (1), the buffer assembly (2), the middle frame (3), the buffer pad (6), and the sound insulation base plate (4); The push plate (2122) is slidably connected to the bolt (7).

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