Prefabricated multi-layer sound insulation wall body framework structure

Abstract

The application provides an assembled multilayer sound insulation wall body framework structure, and relates to the technical field of building wall bodies, comprising: upper and lower frameworks which are arranged in parallel and at intervals; a plurality of horizontal frameworks and a plurality of vertical frameworks which are arranged in a warp-weft staggered manner between the upper and lower frameworks, wherein the vertical framework comprises a base portion and two extension portions which cross to form a cross, the base portion is slidably arranged between the upper and lower frameworks, and the two extension portions are respectively arranged on the two sides of the upper framework; a plurality of clamping structures which are respectively arranged on the side surfaces of the extension portions, wherein the clamping structure comprises a plurality of L-shaped frames which are arranged at intervals along the length direction of the extension portion, the outer end surface of the vertical portion of the L-shaped frame located at the frontmost side is coplanar with the inner side surface of the extension portion, and a column-shaped frame is arranged between the two adjacent L-shaped frames; and a plurality of connecting pieces which are arranged on the clamping structures one by one. The scheme of the application can realize simple disassembly on the basis of not changing the original framework structure, can fill a plurality of material plates, and further improves the practicability of the wall body.

Description

Technical Field

[0001] This application relates to a wall structure, and more particularly to a prefabricated multi-layer soundproof wall frame structure. Background Technology

[0002] With the rapid development of related technologies in my country's construction industry and the increasing demands for acoustic and decorative effects in building spaces, a large number of new materials with different sound insulation properties and various soundproof walls with different manufacturing and installation structures and methods are being used more and more. Currently, when disassembling and reassembling soundproof wall frames for the purpose of replacing sound insulation material panels, the frame itself needs to be disassembled. The disassembly process is not only quite complex but also requires repositioning to ensure a tight fit between the material panels and the frame. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this application provides a prefabricated multi-layer soundproof wall frame structure that allows for easy assembly and disassembly without altering the original frame structure, and can be filled with multi-layer material boards, further improving the practicality of the wall.

[0004] To achieve the above objectives, the present invention employs the following techniques: A prefabricated multi-layer soundproof wall frame structure includes: The upper and lower skeletons, which are parallel and spaced apart, are both U-shaped and have openings facing each other. Multiple horizontal and vertical frames are arranged in a crisscross pattern between the upper and lower frames. The horizontal and vertical frames are detachably connected. Each vertical frame includes a base that intersects to form a cross and two extensions. The base slides between the upper and lower frames, and the two extensions are located on the outer sides of the upper frame. Multiple clamping structures are respectively provided on the side of the extension where there are opposing surfaces. The clamping structure includes multiple L-shaped frames spaced apart along the length of the extension. The outer end face of the vertical part of the L-shaped frame located at the frontmost side is coplanar with the inner side of the extension. A column-shaped frame abuts between two adjacent L-shaped frames. The outer side of the vertical part of the L-shaped frame abuts with the corresponding extension. The cross-section of the column-shaped frame is rectangular. The inner side of the column-shaped frame abuts with the corresponding extension, and its outer side is coplanar with the outer end face of the horizontal part of the L-shaped frame. Multiple sliding grooves are arrayed along the vertical direction on the outer side of the horizontal part of the L-shaped frame. Sliding rods with axes parallel to the horizontal part of the L-shaped frame are installed in the sliding grooves. Multiple connectors are correspondingly provided on the clamping structure to fix the clamping structure to the corresponding extension. The connectors include multiple sliders, each slider including a base block and two clamping blocks symmetrically arranged above and below the base block. A slide block is connected to the front side of the base block, and the slide block slides through the corresponding slide rod. A first spring is sleeved on the slide rod, and the first spring is located between the outer side of the slide groove and the outer side of the slide block. A first inclined surface is formed on the outer end face of the base block. A through rod is connected to the bottom surface of the clamping block. A limiting head is provided at the end of the through rod. The limiting head slides vertically through a sliding hole opened on the base block. A second spring is sleeved on the through rod, and the second spring is located in the sliding hole and above the limiting head. A groove penetrating both sides is formed on the top surface of the middle section of the clamping block. The front side of the column frame is provided with a first mating groove, which penetrates the inner side of the column frame, and its outer end face forms a second inclined surface. The front ends of both the first and second inclined surfaces extend outward at an angle. Multiple movable slots are vertically arrayed inside the extension, and locking auxiliary components are movably installed in each movable slot. Multiple through slots that match the sliders are opened on the opposite side of the extension, and the through slots are connected to the corresponding movable slots. When the rear side of the L-shaped frame abuts against the column-shaped frame, the second inclined surface engages with the corresponding first inclined surface. The inner ends of the two locking blocks connected to the same base block pass through the through slot into the movable slot and engage with the corresponding locking auxiliary component. The two locking blocks open, and the grooves of the two locking blocks abut against the top and bottom surfaces of the through slot respectively to fix the slider.

[0005] The beneficial effects of this invention are as follows: (1) Without changing the positions of the upper frame, lower frame, horizontal frame and vertical frame, the material board can be easily disassembled and assembled through the simple disassembly and assembly of the snap-fit ​​structure. (2) The upper frame, lower frame, horizontal frame and vertical frame are used to form multiple first frames. The snap-fit ​​structure is used in conjunction with the vertical frame to form a multi-layer wave-shaped frame structure on the basis of the first frame. On the one hand, it can be used to insert multi-layer material boards to further improve the sound insulation effect of the wall or make the wall have multiple functions such as sound insulation, fire prevention, shock resistance and heat preservation according to actual needs. On the other hand, it increases the diffraction path of sound waves, weakens the diffracted sound energy, and effectively reduces the diffraction of sound energy. (3) The effective and relatively tight connection between the clamping structure and the extension is achieved by connecting the L-shaped frame to the extension and the column frame to the L-shaped frame and being abutted between the two L-shaped frames. The structure is simple and easy to disassemble and assemble. Attached Figure Description

[0006] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0007] Figure 1 The overall three-dimensional structure of the embodiments of this application Figure 1.

[0008] Figure 2 The overall three-dimensional structure of the embodiments of this application Figure 2 .

[0009] Figure 3 This is a three-dimensional structural view of the vertical frame in the embodiments of this application.

[0010] Figure 4 This is a cross-sectional view of the L-shaped frame and the column frame connected in an embodiment of this application.

[0011] Figure 5 This is a cross-sectional view of the connection between the mounting structure and the extension in an embodiment of this application.

[0012] Figure 6 This is a three-dimensional view of the slider in the embodiment of this application.

[0013] Figure 7 This is a cross-sectional view of the L-shaped frame and the extension in an embodiment of this application.

[0014] Figure 8 This is a three-dimensional view of the locking auxiliary component in the embodiments of this application.

[0015] Figure 9 This is a front view of the wall panel in an embodiment of this application.

[0016] Figure 10 This is a cross-sectional view of the wall panel and the base in an embodiment of this application.

[0017] Reference numerals: 1-Upper frame, 2-Lower frame, 3-Horizontal frame, 4-Vertical frame, 41-Base, 42-Extension, 421-Guide rail, 422-Modible groove, 423-Through groove, 5-Mocking structure, 51-L-shaped frame, 511-Slide groove, 512-Slide rod, 513-First spring, 52-Column frame, 521-First mating groove, 6-Connector, 61-Slider, 611-Slide seat, 612-Base block, 613-Clocking block, 614-Through rod, 615-Second spring, 616-Groove, 7-Locking auxiliary component, 71-Base rod, 72-Matching block, 73-Screw, 8-Wall panel, 81-Protrusion, 811-Second mating groove, 82-Limiting groove, 83-Insertion plate, 831-First connecting hole, 9-Connecting frame. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0019] This application provides a prefabricated multi-layer soundproof wall frame structure, such as... Figures 1-3 As shown, it includes an upper frame 1, a lower frame 2, multiple horizontal frames 3, multiple vertical frames 4, multiple snap-fit ​​structures 5, multiple connectors 6, and two wall panels 8.

[0020] The upper frame 1 and lower frame 2 are parallel and spaced apart, both being U-shaped structures, with their openings facing each other. Multiple horizontal frames 3 and multiple vertical frames 4 are arranged in a staggered pattern between the upper frame 1 and lower frame 2. The horizontal frames 3 and vertical frames 4 are detachably connected, and the vertical frames 4 are also detachably connected to both the upper frame 1 and lower frame 2. These detachable connections can be bolted. After the upper frame 1, lower frame 2, horizontal frames 3, and vertical frames 4 are connected in the above manner, multiple first frames are formed, which are used to place sound insulation material panels.

[0021] The vertical frame 4 includes a base 41 that intersects to form a cross and two extensions 42. The base 41 slides between the upper frame 1 and the lower frame 2, and the two extensions 42 are located on the outer sides of the upper frame 1, respectively. Specifically, as shown... Figure 3 As shown, in order to facilitate the installation or replacement of the material plate of the first frame, two connecting frames 9 are symmetrically provided between the top and bottom of the two adjacent bases 41. The two connecting frames 9 are slidably inserted into the upper frame 1 and the lower frame 2, and their bottom surfaces are respectively flush with the bottom surface of the upper frame 1 and the top surface of the lower frame 2.

[0022] Multiple snap-fit ​​structures 5 are respectively disposed on the side of the extension 42 with opposing surfaces, which exist between the extension 42 and its adjacent extension 42. The snap-fit ​​structures 5 are used to construct a multi-layer skeleton structure on both sides of the first frame to insert multi-layer material boards. The material boards can be sound insulation material boards, heat insulation material boards, waterproof material boards, fireproof material boards, and shockproof material boards, etc. This arrangement can further improve the sound insulation effect of the wall and enable the wall to have multiple functions such as sound insulation, fireproofing, shockproofing, and heat insulation. Multiple connectors 6 are disposed one-to-one on the snap-fit ​​structures 5 to fix the snap-fit ​​structures 5 to the corresponding extensions 42.

[0023] Specifically, such as Figure 2 and Figure 3 As shown, the mounting structure 5 includes a plurality of L-shaped frames 51 spaced apart along the length of the extension 42. The outer end face of the vertical part of the L-shaped frame 51 located at the frontmost side is coplanar with the inner side face of the extension 42. A column-shaped frame 52 abuts between two adjacent L-shaped frames 51. That is, when there are n L-shaped frames 51, there are n-1 column-shaped frames 52. The outer side face of the vertical part of the L-shaped frame 51 abuts with the corresponding extension 42. The cross-section of the column-shaped frame 52 is rectangular. The inner side face of the column-shaped frame 52 abuts with the corresponding extension 42, and its outer side face is coplanar with the outer end face of the horizontal part of the L-shaped frame 51.

[0024] In this embodiment, two L-shaped frames 51 and one column-shaped frame 52 are provided. The L-shaped frames 51 are sequentially designated as the first L-shaped frame 51 and the second L-shaped frame 51 according to the order of the extension 42 from front to rear. Since there is only one column-shaped frame 52, it is not specifically referred to separately. Figure 2 As shown, taking any two adjacent extensions 42 as an example, the two first L-shaped frames 51 between them form the second frame, the two column-shaped frames 52 between them form the third frame, and the two second L-shaped frames 51 between them form the fourth frame. The second, third, and fourth frames are all used to place material plates. Since the outer surface of the column-shaped frame 52 is coplanar with the outer end face of the horizontal part of the L-shaped frame 51, the third frame is actually formed by the horizontal part of the first L-shaped frame 51 and the column-shaped frame 52. More specifically, the length of the base 41 protruding from one side of the extension 42 is equal to the length of the outer surface of the horizontal part of the L-shaped frame 51, so that the first, second, third, and fourth frames form a regular multi-layered wave-shaped frame structure. This not only allows for the placement of multiple layers of material plates but also increases the sound wave diffraction path, weakens the diffracted sound energy, and effectively reduces sound wave diffraction.

[0025] Specifically, such as Figure 2 and Figure 3 As shown, the extension 42 has multiple guide rails 421 arranged vertically on its opposite side. The guide rails 421 are arranged along the length of the extension 42. The outer side of the vertical part of the L-shaped frame 51 and the inner side of the column frame 52 are provided with first guide grooves that slide and fit with the guide rails 421, so as to facilitate the installation and positioning of the L-shaped frame 51 and the column frame 52. In this embodiment, the guide rails 421 have a T-shaped structure, which can prevent the L-shaped frame 51 and the column frame 52 from shaking in the width direction of the extension 42, and further improve the installation stability of the L-shaped frame 51 and the column frame 52.

[0026] Specifically, such as Figures 4-7 As shown, the connector 6 includes multiple sliders 61. Each slider 61 includes a base block 612 and two locking blocks 613 symmetrically arranged above and below the base block 612. A through rod 614 is connected to the bottom surface of the locking block 613. A limiting head is provided at the end of the through rod 614. The limiting head slides vertically through a sliding hole opened on the base block 612. A second spring 615 is sleeved on the through rod 614. The second spring 615 is located in the sliding hole and above the limiting head. When the limiting head is at the bottom of the sliding hole, the second spring 615 is in a natural or compressed state.

[0027] Specifically, such as Figure 4 and Figure 5As shown, multiple sliding grooves 511 are arranged vertically on the outer side of the horizontal part of the L-shaped frame 51. Sliding rods 512 with their axes parallel to the horizontal part of the L-shaped frame 51 are installed in the sliding grooves 511. A sliding seat 611 is formed on the front side of the base block 612. The sliding seat 611 slides through the corresponding sliding rod 512. A first spring 513 is sleeved on the sliding rod 512. The first spring 513 is located between the outer side of the sliding groove 511 and the outer side of the sliding seat 611. A first inclined surface is formed on the outer end face of the base block 612. A first mating groove 521 is formed on the front side of the column frame 52. The first mating groove 521 penetrates the inner side of the column frame 52, and a second inclined surface is formed on its outer end face. The front ends of the first and second inclined surfaces both extend outward at an angle.

[0028] Specifically, such as Figure 2 , Figures 4-7 As shown, multiple movable slots 422 are vertically arrayed inside the extension 42. Multiple through slots 423 that match the slider 61 are provided on the opposite side of the extension 42. That is, the length of the through slot 423 matches the width of the locking block 613. The through slot 423 communicates with the corresponding movable slot 422. When the limiting head is located at the bottom of the sliding hole, the distance between the top surfaces of the two locking blocks 613 connected to the same base block 612 is less than or equal to the height of the through slot 423, so that the two locking blocks 613 can pass into the through slot 423.

[0029] Specifically, such as Figures 4-7 As shown, the outer end of the locking block 613 has an L-shaped structure, with its horizontal part located in front of the vertical part. The first mating groove 521 has a convex structure, with its small end located in front of the large end. A groove 616 penetrating both sides is formed on the top surface of the middle section of the locking block 613. The width of the through groove 423 is the same as that of the groove 616. The height difference between the top surfaces of the movable groove 422 and the through groove 423 is 'a', and the height difference between the bottom surfaces of the through groove 423 and the movable groove 422 is 'a', where 'a' is greater than or equal to the height of the groove 616. That is, the top surface of the through groove 423 is lower than the top surface of the movable groove 422, and the bottom surface of the through groove 423 is higher than the bottom surface of the movable groove 422, with a height difference of 'a' in both cases. A third inclined surface with a trend of lower at the front and higher at the back is formed on the bottom surface of the inner end of the locking block 613. The through groove 423, which is opened on the same extension 42 and located at the same height, connects to the same movable groove 422.

[0030] Specifically, such as Figure 5 , Figure 7 and Figure 8As shown, each movable slot 422 is equipped with a locking auxiliary component 7. The locking auxiliary component 7 is movable along the length of the extension 42. The locking auxiliary component 7 includes a U-shaped base rod 71 and multiple mating blocks 72 on the vertical part of the base rod 71, each corresponding to a slider 61. Here, slider 61 refers to the corresponding slider 61 that has a mating relationship with the movable slot 422 where the locking auxiliary component 7 is located. The top and bottom surfaces of the mating blocks 72 are both formed with a fourth inclined surface that is lower in the front and higher in the back. The fourth inclined surface slides and engages with the corresponding third inclined surface. More specifically, a screw 73 is rotatably connected in the movable slot 422. The screw 73 is threaded through the base rod 71, and the rear end of the screw 73 protrudes from the corresponding extension 42 and is connected to a rotating head. The rotating head has a cross-shaped structure.

[0031] When the rear side of the L-shaped frame 51 abuts against the column-shaped frame 52, as Figure 5 As shown, the second inclined surface mates with the corresponding first inclined surface. The inner ends of the two locking blocks 613 connected to the same base block 612 pass through the through slot 423 into the movable slot 422. The locking auxiliary member 7 moves along the length of the extension 42, as shown. Figures 6-8 As shown, the fourth inclined plane slides onto the corresponding third inclined plane to open the two locking blocks 613. Figure 7 As shown, the grooves 616 of the two locking blocks 613 abut against the top and bottom surfaces of the through slot 423, respectively. Because the through slot 423 is designed for the matching of the two locking blocks 613, it also prevents displacement of the L-shaped frame 51 in both the length and width directions of the extension 42, thus achieving a stable connection between the L-shaped frame 51 and the extension 42. Figure 4 As shown, the outer ends of the two locking blocks 613 abut against the top and bottom surfaces of the first mating groove 521, respectively, to achieve the connection between the L-shaped frame 51 and the column frame 52. Furthermore, since the column frame 52 is abutted against by the two L-shaped frames 51 in the middle, under the combined constraint of the above two forms, displacement of the column frame 52 can be prevented from occurring in the length direction of the extension 42. With the constraint of the guide rail 421 cooperating with the first guide groove, the column frame 52 can be stably installed.

[0032] Specifically, such as Figure 1 , Figure 2 and Figure 9 As shown, the two wall panels 8 are located on both sides of the upper frame 1. The inner side of the wall panel 8 abuts against the rear side of the corresponding side extension 42. The inner side of the wall panel 8 also forms a plurality of protrusions 81 between the two adjacent extensions 42. The protrusions 81 correspond to the first mating groove 521 and have a plurality of second mating grooves 811 with the same structure.

[0033] When the rear side of the L-shaped frame 51 abuts against the protrusion 81, the base block 612 slides into the corresponding second mating groove 811. The inner ends of the two locking blocks 613 connected to the same base block 612 pass through the through groove 423 into the movable groove 422. The locking auxiliary member 7 moves along the length direction of the extension 42. The fourth inclined surface slides into the corresponding third inclined surface to open the two locking blocks 613, thereby realizing the connection between the wall panel 8 and the L-shaped frame 51, as well as the connection between the L-shaped frame 51 and the extension 42.

[0034] Specifically, such as Figure 9 As shown, the inner side of the wall panel 8 is also provided with limiting grooves 82 corresponding to the rotating head. When the rear side of the L-shaped frame 51 abuts against the protrusion 81 and the screw 73 rotates to the state where the locking auxiliary 7 is engaged with the slider 61, the rotating head matches the limiting groove 82 to prevent the screw 73 from rotating.

[0035] The connection between the wall panel 8 and the vertical frame 4 can take various forms, such as hanging type and veneer type. In this embodiment, to facilitate the replacement of material panels and achieve simple disassembly and assembly of the wall panel 8, a plug-in type can also be used. Specifically, as shown... Figure 1 , Figure 9 and Figure 10 As shown, multiple insert plates 83 are formed on the front sides of the two vertical sections of the wall panel 8. The distance from the inner side of one insert plate 83 to the corresponding end face of the wall panel 8 is equal to the distance from the outer side of the other insert plate 83 to the corresponding end face of the wall panel 8. Each insert plate 83 has a first connecting hole 831 extending through the width of the extension 42. With this design, the two wall panels 8 are installed in a centrally symmetrical manner, which ensures that when wall panels 8 are installed on both sides of the upper frame 1, the overall appearance is as follows: Figure 10 The connection effect shown is such that the first connecting holes 831 of the two wall panels 8 are coaxial. Second connecting holes can also be opened on the bases 41 at both ends. Bolts are screwed into the first connecting holes 831 and the second connecting holes at the same end, thus connecting the two wall panels 8 and the vertical frame 4. More specifically, guide rails 421 can also be provided on the side of the extension 42 where there is no opposing surface, i.e., on the outer side of the extensions 42 at both ends. Second guide grooves are opened on the inner sides of the two vertical parts of the wall panel 8 to further improve the stability of the connection between the wall panel 8 and the vertical frame 4.

[0036] When disassembling and assembling for the purpose of replacing the material board, first disconnect the connection between the wall panel 8 and the vertical frame 4, and rotate the screw 73 to cancel the engagement between the locking auxiliary part 7 and the slider 61; then, take out the second L-shaped frame 51, the column frame 52 and the first L-shaped frame 51 in sequence to remove the material board; finally, replace the new material board and install the new material board, the first L-shaped frame 51, the column frame 52 and the first L-shaped frame 51.

[0037] In application, the above description is only a preferred embodiment of this application and is not intended to limit this application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application.

Claims

1. A prefabricated multi-layer soundproof wall frame structure, characterized in that, include: The upper frame (1) and lower frame (2) are parallel and spaced apart, both of which have a U-shaped structure and their openings are positioned opposite each other; Multiple horizontal frames (3) and multiple vertical frames (4) are arranged in a crisscross pattern between the upper frame (1) and the lower frame (2). The horizontal frames (3) and the vertical frames (4) are detachably connected. The vertical frame (4) includes a base (41) that intersects to form a cross and two extensions (42). The base (41) slides between the upper frame (1) and the lower frame (2), and the two extensions (42) are located on the outside of the upper frame (1) on both sides. Multiple clamping structures (5) are respectively provided on the side of the extension (42) where there are opposing surfaces. The clamping structure (5) includes multiple L-shaped frames (51) spaced apart along the length of the extension (42). The outer end face of the vertical part of the L-shaped frame (51) located at the frontmost side is coplanar with the inner side face of the extension (42). A column frame (52) abuts between two adjacent L-shaped frames (51). The outer side face of the vertical part of the L-shaped frame (51) abuts with the corresponding extension (42). The cross-section of the column frame (52) is rectangular. The inner side face of the column frame (52) abuts with the corresponding extension (42), and its outer side face is coplanar with the outer end face of the horizontal part of the L-shaped frame (51). Multiple sliding grooves (511) are arranged in a vertical array on the outer side face of the horizontal part of the L-shaped frame (51). A sliding rod (512) with an axis parallel to the horizontal part of the L-shaped frame (51) is installed in the sliding groove (511). Multiple connectors (6) are correspondingly disposed on the clamping structure (5) to fix the clamping structure (5) to the corresponding extension (42). The connector (6) includes multiple sliders (61). Each slider (61) includes a base block (612) and two locking blocks (613) symmetrically disposed above and below the base block (612). A slide block (611) is connected to the front side of the base block (612). The slide block (611) slides through the corresponding slide rod (512). A first spring (513) is sleeved on the slide rod (512). 3) Located between the outer side of the slide groove (511) and the outer side of the slide block (611), the outer end face of the base block (612) forms a first inclined surface, the bottom surface of the locking block (613) is connected to a through rod (614), the end of the through rod (614) is provided with a limiting head, the limiting head slides vertically through a sliding hole opened on the base block (612), a second spring (615) is sleeved on the through rod (614), the second spring (615) is located in the sliding hole and above the limiting head, and the top surface of the middle section of the locking block (613) forms a groove (616) that runs through both sides of it. The front side of the column frame (52) is provided with a first mating groove (521), the first mating groove (521) penetrates the inner side of the column frame (52), and its outer end face forms a second inclined surface. The front ends of the first inclined surface and the second inclined surface both extend outward. Multiple movable slots (422) are vertically arrayed inside the extension (42), and locking auxiliary parts (7) are movably installed in each movable slot (422). Multiple through slots (423) that match the slider (61) are opened on the side of the extension (42) with opposite faces. The through slots (423) are connected to the corresponding movable slots (422). When the rear side of the L-shaped frame (51) abuts against the column frame (52), the second inclined surface engages with the corresponding first inclined surface. The inner ends of the two locking blocks (613) connected to the same base block (612) pass through the through groove (423) into the movable groove (422) and engage with the corresponding locking auxiliary part (7). The two locking blocks (613) open, and the grooves (616) of the two locking blocks (613) abut against the top and bottom surfaces of the through groove (423) respectively to fix the slider (61).

2. The prefabricated multi-layer soundproof wall frame structure according to claim 1, characterized in that, The outer end of the locking block (613) is L-shaped, with its horizontal part located in front of the vertical part. The first mating groove (521) is convex, with its small end located in front of the large end. When the rear side of the L-shaped frame (51) abuts against the column frame (52), the second inclined surface fits against the corresponding first inclined surface. The inner ends of the two locking blocks (613) connected to the same base block (612) pass through the through groove (423) into the movable groove (422) and cooperate with the corresponding locking auxiliary part (7). The two locking blocks (613) open, and their outer ends abut against the top and bottom surfaces of the first mating groove (521) respectively.

3. The prefabricated multi-layer soundproof wall frame structure according to claim 1, characterized in that, The width of the through groove (423) and the groove (616) are the same. The height difference between the top surfaces of the movable groove (422) and the through groove (423) is a, and the height difference between the bottom surfaces of the through groove (423) and the movable groove (422) is a, where a is greater than or equal to the height of the groove (616). When the limiting head is at the bottom of the sliding hole, the distance between the top surfaces of the two locking blocks (613) connected to the same base block (612) is less than or equal to the height of the through groove (423).

4. The prefabricated multi-layer soundproof wall frame structure according to claim 3, characterized in that, The bottom surface of the inner end of the card block (613) forms a third inclined surface with a trend of lower front and higher back. The through groove (423) opened on the same extension (42) and located at the same height is connected to the same movable groove (422). The locking auxiliary member (7) is moved along the length direction of the extension (42). The locking auxiliary member (7) includes a base rod (71) with a U-shaped structure and a plurality of mating blocks (72) provided on the vertical part of the base rod (71) that correspond one-to-one with the slider (61). The top and bottom surfaces of the mating blocks (72) both form a fourth inclined surface with a trend of lower front and higher back. The fourth inclined surface slides and engages with the corresponding third inclined surface.

5. The prefabricated multi-layer soundproof wall frame structure according to claim 4, characterized in that, It also includes two wall panels (8) located on both sides of the upper frame (1). The inner side of the wall panel (8) abuts against the rear side of the corresponding side extension (42). The inner side of the wall panel (8) also forms a plurality of protrusions (81) between two adjacent extensions (42). The protrusions (81) correspond one-to-one with the first mating groove (521) and have a plurality of second mating grooves (811) with the same structure. When the rear side of the L-shaped frame (51) abuts against the protrusion (81), the base block (612) slides into the corresponding second mating groove (811). The inner ends of the two locking blocks (613) connected to the same base block (612) are inserted into the movable groove (422) through the through groove (423) and cooperate with the corresponding locking auxiliary (7).

6. The prefabricated multi-layer soundproof wall frame structure according to claim 1, characterized in that, The extension (42) has multiple guide rails (421) arranged vertically on the side of the opposite face. The guide rails (421) are arranged along the length of the extension (42). The outer side of the vertical part of the L-shaped frame (51) and the inner side of the column frame (52) are both provided with a first guide groove that slides and engages with the guide rail (421).

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