Splicing type practical training site sound insulation and noise reduction wallboard and using method thereof

Abstract

The invention relates to a splicing type sound insulation and noise reduction wallboard for a practical training field. The wallboard is designed to solve the problems that an existing sound insulation material in a practical training field is inconvenient to transport, poor in installation flexibility, limited in sound insulation effect and the like. The wallboard assembly is of a three-layer structure and comprises a protective layer, a sound absorption material layer and a noise reduction structure layer. An elastic metal sheet and a linkage noise elimination assembly are arranged in the sound absorption material layer, noise of different frequencies can be adapted by replacing a balancing weight, and resonance energy absorption is achieved; the linkage noise elimination assembly vibrates along with the elastic metal sheet, and the airtight state is dynamically adjusted to assist in noise reduction. The base assembly supports the wall plate through the supporting rods. The wallboard is spliced by the tenon-and-mortise blocks, is convenient to transport and flexible to mount, can efficiently obstruct noise of a practical training field, creates a good acoustic environment for operators, and is convenient to maintain and adjust in layout.

Description

Technical Field

[0001] The invention relates to the technical field of architectural acoustic materials, and in particular to a splicable training site sound insulation and noise reduction wallboard and a use method thereof. Background Art

[0002] In the modern vocational education and industrial training system, training sites are an indispensable key link and are widely distributed in various colleges and professional training institutions. In the mechanical processing training workshop, lathes, milling machines, drilling machines and other equipment run at high speed; in the electronic and electrical training site, electrical equipment debugging and circuit testing are frequently carried out; in the auto repair training site, vehicle disassembly and the use of repair tools will also create a lot of noise. The noise generated by these training activities not only seriously interferes with the surrounding teaching and office environment, but also poses a potential threat to the hearing health of the training operators.

[0003] The traditional method of dealing with noise in training venues mainly relies on laying sound-absorbing cotton and installing ordinary sound insulation panels. Although sound-absorbing cotton can absorb some sound, the sound absorption band is limited and the effect on low-frequency noise is poor. In addition, its structure is loose and its durability is insufficient. Under the long-term vibration and dust erosion of the training environment, the sound absorption performance is prone to decline. Ordinary sound insulation panels are mostly one-piece molding structures, which are extremely inconvenient to transport. Due to narrow passages such as doorways and stairs in the venue, the panels are easily damaged during transportation, which increases costs. In addition, this type of sound insulation board has poor installation flexibility and is difficult to adapt to the irregular layout of different training venues. Once the layout needs to be adjusted after installation, the modification is difficult.

[0004] Furthermore, the existing sound insulation materials and structural designs are relatively simple, mostly relying solely on the sound insulation properties of the materials themselves, lacking innovative mechanical structures to assist in improving the sound insulation performance. When faced with complex and changeable training noise with a large frequency span, traditional sound insulation solutions are often stretched to the limit and cannot fully and efficiently block the propagation of noise, and it is difficult to meet the current comprehensive needs for high-quality, low-cost, and easy-to-maintain acoustic environments in training venues. Therefore, it is urgent to develop a new type of splicable training venue sound insulation and noise reduction wallboard. Summary of the invention

[0005] Based on the above purpose, the present invention provides a splicable training site sound insulation and noise reduction wall panel and a use method thereof.

[0006] A splicable training venue sound insulation and noise reduction wall panel, including a wall panel assembly and a base assembly. The wall panel assembly is a three-layer structure, which includes a protective layer, a sound-absorbing material layer and a noise reduction structure layer from the outside to the inside. The outer frames of the protective layer, the sound-absorbing material layer and the noise reduction structure layer are all rectangular in shape. The sound-absorbing material layer is a rectangular hollow structure. An elastic metal sheet is provided in the center of the sound-absorbing material layer. The front end of the elastic metal sheet is a circular opening, and the rear end is a dome arc shape. A connecting rod is provided in the center of the elastic metal sheet. A sliding sleeve on the outer peripheral surface of the connecting rod is provided with a cross mounting plate. The cross mounting plate is fixed to the inner wall of the sound-absorbing material layer. A screw is inserted into the central thread of the outer rear end of the connecting rod. A counterweight is connected to the end of the screw. Four connecting plates are equidistantly distributed on the outer edge of the elastic metal sheet. The connecting plates are all horizontally provided with sliding rods. The sliding rods all slide through the cross mounting plate. The ends of the sliding rods are provided with A linkage noise reduction component for reducing noise, the linkage noise reduction component includes a mounting rod vertically arranged at the end of the sliding rod, a plurality of racks are equidistantly distributed on the side walls of the mounting rod, gears are meshed at the bottom of the racks, rotating rods are inserted in the centers of the gears, both ends of the rotating rods are rotatably installed on the inner wall of the sound-absorbing material layer, airtight plates are sleeved on the outer circumference of the rotating rods, the base component includes a base, two storage grooves are symmetrically opened on the upper and lower sides of the base, hinged seats are arranged inside the storage grooves, lower support rods are hinged on the top of the hinged seats, upper support rods are hinged on the tops of the lower support rods, fastening bolts are inserted on the upper support rods, the fastening bolts are threadedly connected to the protective layer, mortise and tenon blocks are arranged on all four sides of the sound-absorbing material layer, the mortise and tenon blocks are individually arranged or two are installed in a group on the side walls of the sound-absorbing material layer, the mortise and tenon blocks are symmetrically arranged in structure, positioning grooves are opened on the upper and lower sides of the base, the positioning grooves are used to match the mortise and tenon blocks.

[0007] Furthermore, a rubber layer is provided at the end of the counterweight.

[0008] Furthermore, a top spring is sleeved on the outer peripheral surface of the slide rod near the position between the cross mounting plate and the connecting plate.

[0009] Furthermore, the noise reduction structural layer is distributed with a number of noise reduction holes.

[0010] Furthermore, when two mortise and tenon blocks are installed as a group, an installation groove is formed, and the installation groove is used to cooperate with the mortise and tenon blocks for installation.

[0011] Furthermore, the elastic metal sheet is made of stainless steel, and the thickness of the elastic metal sheet is 0.5-1 mm.

[0012] Furthermore, the protective layer and the noise reduction structure layer are threadedly connected to the four corners of the sound absorbing material layer through cross bolts.

[0013] Furthermore, the counterweight block is made of lead material, and the weight of the counterweight block can be selected in the range of 50-500G.

[0014] Furthermore, the screw thread sleeve is provided with a nut for fixing and preventing slipping.

[0015] A method for using a splicable training site sound insulation and noise reduction wall panel, comprising the following steps: S1. According to the noise characteristics of the training site, pre-detect the common noise frequency bands, select the appropriate weight of the counterweight according to the detection results, install it on the elastic metal sheet, and tighten it by rotating the nut on the screw; S2. Place the assembled base assembly at a predetermined installation position, change the inclination angle of the wall panel by adjusting the angle between the lower support rod and the upper support rod, and use fastening bolts to fix the connection between the wall panel assembly and the base assembly; S3. Use mortise and tenon blocks and installation grooves to assemble multiple wall panel components in sequence according to the assembly order. During the assembly process, ensure that the adjacent wall panels fit tightly and are airtight, and check whether each joint is stable. S4. When noise is generated during daily operation at the training site, the elastic metal sheet is stimulated by sound waves to resonate, and the counterweight block adapts to noises of different frequencies to absorb and convert sound energy. At the same time, the vibration of the elastic metal sheet drives the linkage noise reduction component, and the airtight plate dynamically adjusts the airtight state inside the sound-absorbing material layer to synergistically reduce noise. S5. If you need to disassemble the wall panel, first unscrew the fastening bolts, remove the wall panel from the base assembly, and then disassemble the spliced ​​wall panels one by one; if the sound-absorbing material layer, protective layer or noise reduction structure layer is damaged, unscrew the cross bolts to replace the corresponding parts.

[0016] Beneficial effects of the present invention: The splicable training site sound insulation and noise reduction wallboard of the present invention reduces noise from multiple dimensions by virtue of its unique three-layer structural design. The protective layer can initially reflect some sound waves while blocking external physical impacts; the elastic metal sheet inside the sound-absorbing material layer can accurately adapt to noises of different frequencies under the action of the resonance adjustment mechanism, converting sound energy into elastic potential energy and efficiently absorbing noise. The noise reduction holes in the noise reduction structural layer further disperse and consume sound wave energy.

[0017] The linked noise reduction components work together with the elastic metal sheet. The airtight plate dynamically adjusts the airtight state inside the sound-absorbing material layer as the elastic metal sheet vibrates, changes the sound propagation path, prevents sound leakage due to air pressure difference, and significantly enhances the overall sound insulation effect, especially for blocking mid- and low-frequency noise.

[0018] The unit panels are designed to be spliced, and each unit panel is small in size and can easily pass through narrow doorways, stairs and other passages, reducing the risk of damage due to size limitations during transportation.

[0019] The unique mortise and tenon joints and installation groove design make wall panel splicing as simple and quick as building blocks, and operators can get started without professional skills. Moreover, this splicing method allows the wall panels to flexibly adapt to various irregular training site layouts, whether it is a corner, curved wall or high and low wall, it can fit perfectly. If the site layout needs to be adjusted later, the wall panels can also be quickly disassembled and reassembled.

[0020] The elastic metal sheet is matched with a replaceable counterweight. By simply adjusting the weight of the counterweight, the natural frequency of the elastic metal sheet can be changed so that it can accurately match the various frequency noises generated by different equipment in the training site. Whether it is the low-frequency roar of the mechanical processing training workshop or the high-frequency howling generated by the debugging of electronic equipment, it can effectively deal with it.

[0021] Each layer of the structure is firmly connected with cross bolts, and the protective layer protects the internal structure from external collisions and wear. The elastic metal sheets in the sound-absorbing material layer, the linkage noise reduction components and other key components have been carefully designed, such as the sliding rod with the top spring to buffer vibration, to ensure long-term stable operation. The lower and upper support rods of the base assembly provide solid support for the wall panels, and even in the frequent vibration environment of the training site, the overall structure can be maintained stable, reducing the frequency of maintenance, extending the service life, and reducing long-term operation and maintenance costs.

[0022] When maintenance of the wall panels is required, thanks to the modular splicing and assembly method, maintenance personnel can quickly locate the faulty module and easily remove and replace the damaged parts without having to dismantle the entire wall on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 A schematic diagram of the splicing structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a wall panel assembly according to an embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of a wall panel assembly according to an embodiment of the present invention; Figure 5 For the embodiment of the present invention Figure 4 A schematic diagram of the enlarged local structure at A; Figure 6 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 7 A schematic diagram of the internal structure of a base assembly according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of a base assembly according to an embodiment of the present invention; Fig. 9 Schematic diagram of the internal structure of a wall panel assembly according to an embodiment of the present invention.

[0025] The markings in the figure are: 1. Wall panel assembly; 2. Base assembly; 3. Noise reduction structural layer; 4. Sound-absorbing material layer; 5. Protective layer; 6. Mortise and tenon block; 7. Mounting groove; 8. Noise reduction hole; 9. Elastic metal sheet; 10. Connecting plate; 11. Sliding rod; 12. Top spring; 13. Cross mounting plate; 14. Mounting rod; 15. Rack; 16. Gear; 17. Rotating rod; 18. Airtight plate; 19. Cross bolt; 20. Base; 21. Storage slot; 22. Articulated seat; 23. Lower support rod; 24. Upper support rod; 25. Fastening bolt; 26. Positioning groove; 27. Connecting rod; 28. Screw; 29. ​​Nut; 30. Counterweight; 31. Rubber layer. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0027] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0028] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0029] Example 1 See also Figures 1 to 9 A splicable training site sound insulation and noise reduction wall panel, including a wall panel component 1 and a base component 2. The wall panel component 1 is a three-layer structure, which is composed of a protective layer 5, a sound-absorbing material layer 4 and a noise reduction structure layer 3 from the outside to the inside. The outer frame shapes of the protective layer 5, the sound-absorbing material layer 4 and the noise reduction structure layer 3 are all rectangular. The sound-absorbing material layer 4 is a rectangular hollow structure. An elastic metal sheet 9 is provided in the center of the sound-absorbing material layer 4. The front end of the elastic metal sheet 9 is a circular opening shape, and the rear end is a dome arc shape. The elastic A connecting rod 27 is provided at the center of the metal sheet 9, and a cross mounting plate 13 is provided on the sliding sleeve of the outer peripheral surface of the connecting rod 27. The cross mounting plate 13 is fixed to the inner wall of the sound-absorbing material layer 4. A screw 28 is inserted into the center thread of the outer tail end of the connecting rod 27, and a counterweight block 30 is connected to the end of the screw 28. Four connecting plates 10 are distributed at equal distances on the outer edge of the elastic metal sheet 9. The connecting plates 10 are all horizontally provided with sliding rods 11. The sliding rods 11 are all slidably penetrated through the cross mounting plate 13, and the ends of the sliding rods 11 are all provided with linkage noise reduction for reducing noise. The linkage noise reduction component includes a mounting rod 14 vertically arranged at the end of the sliding rod 11, and a plurality of racks 15 are evenly distributed on the side wall of the mounting rod 14. The bottom of the rack 15 is meshed with a gear 16, and a rotating rod 17 is inserted in the center of the gear 16. Both ends of the rotating rod 17 are rotatably installed on the inner wall of the sound-absorbing material layer 4, and the outer circumference of the rotating rod 17 is sleeved with an airtight plate 18. The base component 2 includes a base 20, and two storage grooves 21 are symmetrically provided on the upper and lower sides of the base 20, and the storage grooves 21 are provided with hinges. The connecting seat 22 and the top of the hinged seat 22 are hinged with a lower support rod 23, the top of the lower support rod 23 is hinged with an upper support rod 24, the upper support rod 24 is inserted with a fastening bolt 25, the fastening bolt 25 is threadedly connected to the protective layer 5, and the four sides of the sound-absorbing material layer 4 are provided with mortise and tenon blocks 6, the mortise and tenon blocks 6 are individually arranged or two are installed in a group on the side wall of the sound-absorbing material layer 4, the mortise and tenon blocks 6 are symmetrically arranged, and positioning grooves 26 are opened on the upper and lower sides of the base 20, and the positioning grooves 26 are used to adapt to the mortise and tenon blocks 6.

[0030] Specifically, a rubber layer 31 is provided at the end of the counterweight block 30, a top spring 12 is sleeved on the outer peripheral surface of the slide rod 11 near the position between the cross mounting plate 13 and the connecting plate 10, a number of noise reduction holes 8 are distributed on the noise reduction structure layer 3, and a mounting groove 7 is formed when two mortise and tenon blocks 6 are installed in a group, and the mounting groove 7 is used for installation with the mortise and tenon blocks 6, the elastic metal sheet 9 is made of stainless steel, and the thickness of the elastic metal sheet 9 is 0.5-1 mm, the protective layer 5 and the noise reduction structure layer 3 are threadedly connected to the four corners of the sound-absorbing material layer 4 through the cross bolts 19, the counterweight block 30 is made of lead material, and the weight range of the counterweight block 30 is 50-500G The screw rod 28 is threadedly sleeved with a nut 29 for fixing and preventing slipping.

[0031] A method for using a splicable training site sound insulation and noise reduction wall panel, comprising the following steps: S1. According to the noise characteristics of the training site, the common noise frequency band is pre-detected, and a counterweight 30 of appropriate weight is selected according to the detection result and installed on the elastic metal sheet 9, and the nut 29 on the screw 28 is rotated to complete the tightening; S2, placing the assembled base assembly 2 at a predetermined installation position, changing the inclination angle of the wall panel by adjusting the angle between the lower support rod 23 and the upper support rod 24, and fixing the connection between the wall panel assembly 1 and the base assembly 2 with the fastening bolts 25; S3, according to the splicing order, use the mortise and tenon blocks 6 and the installation grooves 7 to sequentially splice multiple wall panel assemblies 1, during the splicing process, ensure that the adjacent wall panels are tightly fitted and airtight, and check whether each splicing point is stable; S4. When noise is generated during daily operation at the training site, the elastic metal sheet 9 is stimulated by sound waves to resonate, and the counterweight block 30 adapts to noises of different frequencies to absorb and convert sound energy; at the same time, the vibration of the elastic metal sheet 9 drives the linkage noise reduction component, and the airtight plate 18 dynamically adjusts the airtight state inside the sound-absorbing material layer 4 to synergistically reduce noise; S5. If the wall panel needs to be disassembled, first unscrew the fastening bolts 25, remove the wall panel from the base assembly 2, and then disassemble the spliced ​​wall panels in sequence; if the sound-absorbing material layer 4, the protective layer 5 or the noise reduction structure layer 3 is damaged, unscrew the cross bolts 19 to replace the corresponding parts; if key components such as the elastic metal sheet 9 and the linkage noise reduction assembly are faulty, disassemble and replace them in the reverse order of assembly.

[0032] 1. Wall panel assembly Sound absorbing material layer 4 internal parts installation First, prepare the hollow frame of the sound-absorbing material layer 4, and fix the cross mounting plate 13 to its inner wall. Welding or high-strength glue bonding can be used to ensure that the cross mounting plate 13 is firmly positioned. Next, pass the connecting rod 27 of the elastic metal sheet 9 through the center hole of the cross mounting plate 13, so that the elastic metal sheet 9 can swing flexibly with the connecting rod 27 as the axis. The elastic metal sheet 9 is made of stainless steel with a thickness controlled between 0.5-1 mm. The circular opening at the front end and the dome arc at the rear end are more conducive to the response of sound waves.

[0033] Insert the screw 28 into the center of the outer tail end of the connecting rod 27, select a lead counterweight 30 of appropriate weight 50-500G, screw the screw 28 into the corresponding threaded hole of the counterweight 30, and then tighten the nut 29 to fix it. At the same time, ensure that the rubber layer 31 at the end of the counterweight 30 is intact, which can buffer vibration and reduce additional noise.

[0034] The slide bar 11 is transversely mounted on the four connecting plates 10 at the outer edge of the elastic metal sheet 9 , the slide bar 11 is slid through the cross mounting plate 13 , and a top spring 12 is sleeved between the slide bar 11 near the cross mounting plate 13 and the connecting plate 10 .

[0035] A linkage noise reduction assembly is installed at the end of the slide bar 11, and the mounting rod 14 with a rack 15 is fixed on the slide bar 11, so that the rack 15 is precisely meshed with the corresponding gear 16, and the center of the gear 16 is inserted into the rotating rod 17, and the two ends of the rotating rod 17 are rotatably installed on the inner wall of the sound-absorbing material layer 4, and finally the airtight plate 18 is put on.

[0036] Three-layer structure assembly Align the outer frames of the protective layer 5, the sound absorbing material layer 4 and the noise reduction structure layer 3, wherein the sound absorbing material layer 4 is a rectangular hollow structure and the noise reduction structure layer 3 has a plurality of noise reduction holes 8. Use cross bolts 19 to thread the protective layer 5 and the sound absorbing material layer 4 at the four corners, and connect the sound absorbing material layer 4 and the noise reduction structure layer 3 in the same way to complete the preliminary assembly of the wall panel assembly 1.

[0037] Installation of mortise and tenon block 6 According to the design, the mortise and tenon blocks 6 are installed individually or in groups of two on the four sides of the sound absorbing material layer 4. When two mortise and tenon blocks 6 are installed as a group, an installation groove 7 will be formed. It is necessary to ensure that the mortise and tenon blocks 6 are firmly installed, and their symmetrical structure facilitates subsequent precise splicing.

[0038] 2. Assembly of base assembly 2 In the symmetrical storage slots 21 on the upper and lower sides of the base 20, hinge seats 22 are installed respectively, and can be fastened with screws. Next, hinge the lower support rod 23 to the top of the hinge seat 22, and then hinge the upper support rod 24 to the top of the lower support rod 23. Check the rotation flexibility of each hinge to ensure smooth subsequent adjustment.

[0039] 3. Overall installation Connection between the wall panel and the base: Place the assembled wall panel assembly 1 next to the base assembly 2, align the upper support rod 24 with the protective layer 5, screw in the fastening bolts 25, and adjust the angles of the lower support rod 23 and the upper support rod 24 according to actual installation requirements. Use their movable characteristics to make the wall panel achieve an ideal vertical or inclined installation state.

[0040] Splicing and installation: If multiple wall panels need to be spliced, align the mortise and tenon block 6 of one wall panel with the installation groove 7 and the corresponding mortise and tenon structure of another wall panel, and push gently. Relying on the positioning assistance of the groove 7, the two wall panels can be quickly spliced ​​into place. Repeat this operation in sequence to splice a whole wall of sound insulation and noise reduction wall panels.

[0041] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A splicable training site sound insulation and noise reduction wall panel, comprising a wall panel component (1) and a base component (2), characterized in that: The wall panel assembly (1) is a three-layer structure, which comprises a protective layer (5), a sound-absorbing material layer (4) and a noise reduction structure layer (3) from the outside to the inside. The outer frames of the protective layer (5), the sound-absorbing material layer (4) and the noise reduction structure layer (3) are all rectangular in shape. The sound-absorbing material layer (4) is a rectangular hollow structure. An elastic metal sheet (9) is provided at the center of the sound-absorbing material layer (4). The front end of the elastic metal sheet (9) is a circular opening shape and the rear end is a dome arc shape. A connecting rod (27) is provided at the center of the elastic metal sheet (9). A sliding sleeve on the outer peripheral surface of the connecting rod (27) is provided with a cross mounting plate. (13), the cross mounting plate (13) is fixed to the inner wall of the sound absorbing material layer (4), the outer tail end of the connecting rod (27) is provided with a screw rod (28) through a central thread, the end of the screw rod (28) is connected to a counterweight block (30), the outer edge of the elastic metal sheet (9) is provided with four connecting plates (10) distributed at equal distances, the connecting plates (10) are all provided with a sliding rod (11) in a transverse direction, the sliding rod (11) is all slidably penetrated through the cross mounting plate (13), the ends of the sliding rods (11) are all provided with a linkage noise reduction component for reducing noise, the linkage noise reduction component includes a mounting rod (11) vertically arranged at the end of the sliding rod (11) A mounting rod (14), wherein a plurality of racks (15) are evenly spaced on the side wall of the mounting rod (14), wherein the bottom of each rack (15) is meshed with a gear (16), wherein a rotating rod (17) is inserted in the center of each gear (16), wherein both ends of each rotating rod (17) are rotatably mounted on the inner wall of the sound-absorbing material layer (4), wherein an airtight plate (18) is sleeved on the outer circumference of each rotating rod (17), wherein the base assembly (2) comprises a base (20), wherein two receiving grooves (21) are symmetrically provided on the upper and lower sides of each base (20), wherein each receiving groove (21) is provided with a hinge seat (22), wherein each hinge seat (22) is provided with a hinge seat (22) ) are hingedly connected to the top of a lower support rod (23), and the top of each lower support rod (23) is hingedly connected to an upper support rod (24), and each upper support rod (24) is inserted with a fastening bolt (25), and each fastening bolt (25) is threadedly connected to the protective layer (5). The four sides of the sound-absorbing material layer (4) are provided with mortise and tenon blocks (6), and the mortise and tenon blocks (6) are individually arranged or two are installed in a group on the side wall of the sound-absorbing material layer (4), and the mortise and tenon blocks (6) are symmetrically arranged. Positioning grooves (26) are opened on the upper and lower sides of the base (20), and the positioning grooves (26) are used to match the mortise and tenon blocks (6).

2. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: The end of the counterweight (30) is provided with a rubber layer (31).

3. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: A top spring (12) is sleeved on the outer peripheral surface of the slide rod (11) at a position between the cross mounting plate (13) and the connecting plate (10).

4. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: The noise reduction structural layer (3) is provided with a plurality of noise reduction holes (8).

5. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: When two of the mortise and tenon blocks (6) are installed in a group, an installation groove (7) is formed, and the installation groove (7) is used to cooperate with the mortise and tenon blocks (6) for installation and use.

6. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: The elastic metal sheet (9) is made of stainless steel, and the thickness of the elastic metal sheet (9) is 0.5-1 mm.

7. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: The protective layer (5) and the noise reduction structural layer (3) are both threadedly connected to the four corners of the sound absorbing material layer (4) via cross bolts (19).

8. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: The counterweight block (30) is made of lead material, and the weight of the counterweight block (30) can be selected within a range of 50-500G.

9. The splicable training site sound insulation and noise reduction wallboard according to claim 1 is characterized in that: The threaded sleeve of the screw rod (28) is provided with a nut (29) for fixing and preventing slipping.

10. A method for using a splicable training site sound insulation and noise reduction wallboard according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. According to the noise characteristics of the training site, the common noise frequency band is detected in advance, and a counterweight (30) of appropriate weight is selected according to the detection result and installed on the elastic metal sheet (9), and the nut (29) on the screw (28) is rotated to complete the tightening; S2, placing the assembled base assembly (2) at a predetermined installation position, changing the inclination angle of the wall panel by adjusting the angle between the lower support rod (23) and the upper support rod (24), and fixing the connection between the wall panel assembly (1) and the base assembly (2) with the fastening bolts (25); S3, according to the splicing order, use the mortise and tenon blocks (6) and the installation grooves (7) to sequentially splice the plurality of wall panel assemblies (1), during the splicing process, ensure that the adjacent wall panels fit tightly together and are airtight, and check whether each splicing point is stable; S4. When noise is generated during daily operation at the training site, the elastic metal sheet (9) is stimulated by sound waves to generate resonance, and the counterweight (30) adapts to noises of different frequencies to absorb and convert sound energy; at the same time, the vibration of the elastic metal sheet (9) drives the linkage noise reduction component, and the airtight plate (18) dynamically adjusts the airtight state inside the sound-absorbing material layer (4), thereby synergistically reducing noise; S5. If the wall panel needs to be disassembled, first unscrew the fastening bolts (25), remove the wall panel from the base assembly (2), and then disassemble the spliced ​​wall panels in sequence; if the sound-absorbing material layer (4), the protective layer (5) or the noise reduction structure layer (3) is damaged, unscrew the cross bolts (19) to replace the corresponding parts.

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