Energy-saving subtractive type fabricated building wall

Abstract

The application relates to the technical field of building interior wall, in particular to an energy-saving and material-reducing type fabricated building wall, which comprises a face wall plate, a square frame and a back wall plate; a triangular module is fixedly arranged in the square frame; the triangular module comprises a triangular frame, an exoskeleton frame arranged in the triangular frame and sound-absorbing cotton filled in the exoskeleton frame; the exoskeleton frame comprises a top corner column, a negative Poisson ratio side frame and a bottom side frame; the negative Poisson ratio side frame comprises a concave frame, a side wall of the bottom side frame facing the top corner column and a side wall of the bottom side frame facing away from the top corner column, and the side walls are provided with lightening grooves matched with the concave frame. The application has the advantages of compact structure, low cost, significant sound absorption and noise reduction effect, light weight, good impact resistance, simple assembly, functions of longitudinally restraining the sound-absorbing cotton and transversely protecting the sound-absorbing cotton and suitability for being used as a non-load-bearing interior wall.

Description

Technical Field

[0001] This invention relates to the field of building interior wall technology, specifically to an energy-saving and material-reducing prefabricated building wall. Background Technology

[0002] Prefabricated building walls are a construction method in which the components of the building walls are prefabricated in a factory and then assembled on site. This method can greatly improve construction speed and quality, and reduce on-site construction noise and pollution. It is a highly efficient, environmentally friendly, and energy-saving construction method that can meet the requirements of modern architecture for speed, quality, and green environmental protection.

[0003] Chinese patent document CN202122445410.5 discloses a wooden shear wall with bamboo-like wall ribs. This patent uses an inner frame with concave hexagons. This inner frame has a negative Poisson's ratio effect in the longitudinal direction, but does not have a negative Poisson's ratio effect in the transverse direction, resulting in poor transverse impact resistance.

[0004] Chinese patent document CN111063403A discloses a novel three-dimensional negative Poisson's ratio honeycomb structure. This patent uses a honeycomb structure to design a negative Poisson's ratio material. Since the units of this negative Poisson's ratio material are connected and stacked in three dimensions, it requires a complex manufacturing process, is expensive, and is inconvenient to store and transport. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving and material-reducing prefabricated building wall to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving and material-reducing prefabricated building wall, comprising a front wall panel, a square frame, and a back wall panel connected sequentially in the front-to-back direction; an inner support frame is fixedly provided on the inner wall of the square frame, the inner support frame dividing the interior of the square frame into several triangular cavities, a triangular module is fixedly provided in each triangular cavity, the triangular module comprising a triangular frame, an exoskeleton frame disposed within the triangular frame, sound-absorbing cotton filled within the exoskeleton frame, an elastic sound-absorbing plate fixedly disposed on the front side of the sound-absorbing cotton, and a heat insulation plate fixedly disposed on the rear side of the sound-absorbing cotton;

[0007] The exoskeleton frame includes a top corner post, two negative Poisson's ratio side frames fixedly connected to two adjacent side walls of the top corner post, and a bottom side frame fixedly connected to the two negative Poisson's ratio side frames away from the ends of the top corner post and bent toward the top corner post; the negative Poisson's ratio side frame includes a concave frame, and the side wall of the bottom side frame facing the top corner post and the side wall of the bottom side frame facing away from the top corner post are both provided with a lightening groove that matches the concave frame.

[0008] Optionally, the triangular cavity, the triangular module, and the triangular frame are all isosceles right triangle structures, and the inner support frame is an X-shaped structure;

[0009] The triangular cavity contains four triangular modules, three of which have their right-angle vertices located at the midpoints of the three sides of the triangular cavity, and the remaining triangular module has its right-angle vertices located at the right-angle vertex of the triangular cavity.

[0010] The triangular frame contains four exoskeleton frames, three of which have their right-angle vertices located at the midpoints of the three sides of the triangular frame, and the remaining exoskeleton frame has its right-angle vertices located at the right-angle vertex of the triangular frame.

[0011] Optionally, both the elastic sound-absorbing panel and the heat insulation panel are isosceles triangular structures. Three mounting rings are fixedly embedded in the front side wall of the back wall panel. The three mounting rings are distributed in concentric circles. The center of gravity of the heat insulation panel is fixedly connected to the mounting rings by bolts.

[0012] Optionally, the top corner post is a quadrangular prism structure, and the bottom frame is bent at an angle of 160°-170° toward the top corner post.

[0013] Optionally, the negative Poisson's ratio side frame is provided with four recessed frames, which are connected sequentially in a 2×2 matrix. Each recessed frame includes two W-shaped frames arranged in a front-to-back mirror symmetry, two V-shaped frames arranged in a top-to-bottom mirror symmetry, and a right-angle block connecting the W-shaped frames and the V-shaped frames.

[0014] Optionally, a glue block is fixedly connected to the right-angled side away from the V-shaped frame on the right-angled block, and a flat end is integrally formed in the middle of the opposite end faces of the two W-shaped frames. The end face of the glue block away from the W-shaped frame and the flat end are in the same vertical plane. The glue block adjacent to the elastic sound-absorbing plate is bonded to the elastic sound-absorbing plate, and the glue block adjacent to the heat insulation plate is bonded to the heat insulation plate.

[0015] Optionally, the bottom frame is integrally formed with two inclined ends, the two inclined ends are respectively in the same plane as the two negative Poisson's ratio side frames, and the inclined ends are provided with right-angle grooves to accommodate the right-angle blocks.

[0016] Optionally, both the front wall panel and the back wall panel are made of wood core board, the front side wall of the front wall panel is coated with a nano silver coating, and the rear side wall of the back wall panel is coated with a waterproof coating.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention has a compact structure, low cost, and significant noise reduction effect. The exoskeleton frame adopts a hollow design and has a negative Poisson grid structure, which is lightweight, has good impact resistance, is easy to assemble, and has the functions of constraining the sound-absorbing cotton in the longitudinal direction and protecting the sound-absorbing cotton in the transverse direction. It is suitable for use as a non-load-bearing interior wall.

[0019] 2. This invention uses elastic sound-absorbing panels and sound-absorbing cotton to achieve sound absorption and noise reduction. After passing through the elastic sound-absorbing panels, the noise will enter the sound-absorbing cotton or move along the light-reducing groove. Compared with the traditional negative Poisson's ratio material structure, the light-reducing groove has a complex path inside, which can reflect sound waves to consume sound wave energy, resulting in a significant noise reduction effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is an exploded view of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the square frame, internal support frame, and triangular module in this invention;

[0023] Figure 4 This is a schematic diagram of the triangular module in this invention;

[0024] Figure 5 This is a partial cross-sectional view of the triangular module in this invention;

[0025] Figure 6 This is a schematic diagram of the exoskeleton framework in this invention.

[0026] Explanation of reference numerals in the attached diagram:

[0027] 1. Front wall panel; 2. Square frame; 3. Back wall panel; 4. Internal support frame; 5. Triangular cavity; 6. Triangular module; 7. Triangular frame; 8. Exoskeleton frame; 9. Sound-absorbing cotton; 10. Elastic sound-absorbing board; 11. Thermal insulation board; 12. Top corner column; 13. Negative Poisson's ratio side frame; 14. Bottom side frame; 15. Recessed frame; 16. Lightening groove; 17. W-shaped frame; 18. V-shaped frame; 19. Right angle block; 20. Adhesive block; 21. Flat end; 22. Angled end; 23. Right angle groove; 24. Mounting ring. Detailed Implementation

[0028] 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, and 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.

[0029] Example: Please refer to Figures 1 to 3 This invention provides an energy-saving and material-reducing prefabricated building wall, comprising a front wall panel 1, a square frame 2, and a back wall panel 3 connected sequentially along the front-to-back direction. Both the front wall panel 1 and the back wall panel 3 are made of wood core board. The front sidewall of the front wall panel 1 is coated with a nano-silver coating, and the rear sidewall of the back wall panel 3 is coated with a waterproof coating. The inner wall of the square frame 2 is integrally formed with an internal support frame 4.

[0030] Based on the above embodiments, in this embodiment, the inner support frame 4 has an X-shaped structure, which divides the inside of the square frame 2 into four triangular cavities 5. Triangular modules 6 are fixedly installed in the triangular cavities 5. The triangular cavities 5, triangular modules 6, and triangular frame 7 are all isosceles right triangle structures. Among them, the right-angle vertices of three triangular modules 6 are located at the midpoints of the three sides of the triangular cavity 5, and the right-angle vertex of the remaining triangular module 6 is located at the right-angle vertex of the triangular cavity 5.

[0031] Please see Figure 4 and Figure 5 The triangular module 6 includes a triangular frame 7, an exoskeleton frame 8 disposed within the triangular frame 7, sound-absorbing cotton 9 filled within the exoskeleton frame 8, an elastic sound-absorbing panel 10 fixed to the front side of the sound-absorbing cotton 9, and a heat insulation panel 11 fixed to the rear side of the sound-absorbing cotton 9. Both the elastic sound-absorbing panel 10 and the heat insulation panel 11 are isosceles triangular structures. The rear sidewall of the wall panel 1 is glued to the square frame 2 and the inner support frame 4 respectively, and the front sidewall of the heat insulation panel 11 is glued to the square frame 2 and the inner support frame 4 respectively.

[0032] In this invention, a total of sixteen triangular modules 6 are provided inside the square frame 2. The four triangular modules 6 in the middle are combined to form a square structure, and the remaining twelve triangular modules 6 are combined to form four isosceles trapezoidal structures on the outside of the square structure. The overall layout is simple, regular, symmetrical and orderly, and has good load-bearing strength.

[0033] Based on the above embodiments, please refer to Figure 2 In this embodiment, three mounting rings 24 are fixedly embedded in the front side wall of the back wall panel 3 by bolts. The three mounting rings 24 are distributed in concentric circles. The center of gravity of the insulation board 11 is fixedly connected to the mounting rings 24 by bolts. The present invention uses three mounting rings 24 to fix the position of the back wall panel 3 and the triangular module 6, making it convenient to insert the sixteen triangular modules 6 as a whole into the triangular cavity 5.

[0034] Please see Figure 6The exoskeleton frame 8 includes a apex post 12, two negative Poisson's ratio side frames 13 fixedly connected to two adjacent side walls of the apex post 12, and a bottom side frame 14 fixedly connected to the ends of the two negative Poisson's ratio side frames 13 away from the apex post 12 and bent towards the apex post 12. The negative Poisson's ratio side frames 13 include recessed frames 15. The side walls of the bottom side frame 14 facing the apex post 12 and the side walls of the bottom side frame 14 facing away from the apex post 12 are both provided with light-reducing grooves 16 that match the recessed frames 15. The bending angle of the bottom side frame 14 towards the apex post 12 is 160°-170°.

[0035] Based on the above embodiments, in this embodiment, the vertex column 12 is a quadrangular prism structure, so the included angle between the two negative Poisson ratio side frames 13 is 90°, the exoskeleton frame 8 is an isosceles right triangle structure, and four exoskeleton frames 8 are provided in the triangular frame 7, of which the right-angle vertices of three exoskeleton frames 8 are located at the midpoints of the three sides of the triangular frame 7 respectively, and the right-angle vertex of the remaining exoskeleton frame 8 is located at the right-angle vertex of the triangular frame 7.

[0036] Based on the above embodiments, this embodiment provides four concave frames 15 within the negative Poisson's ratio side frame 13. The four concave frames 15 are connected sequentially in a 2×2 matrix. Each concave frame 15 includes two W-shaped frames 17 arranged in a front-to-back mirror symmetry, two V-shaped frames 18 arranged in a top-to-bottom mirror symmetry, and a right-angle block 19 connecting the W-shaped frames 17 and the V-shaped frames 18. The W-shaped frames 17, V-shaped frames 18, and right-angle block 19 are integrally formed, and the concave frame 15 has a concave fourteen-sided negative Poisson's ratio structure.

[0037] Based on the above embodiments, in this embodiment, a glue block 20 is fixedly connected to the right-angled side of the right-angled block 19 away from the V-shaped frame 18. A flat end 21 is integrally formed in the middle of the opposite end faces of the two W-shaped frames 17. The end face of the glue block 20 away from the W-shaped frame 17 and the flat end 21 are on the same vertical plane. The glue block 20 adjacent to the elastic sound-absorbing plate 10 is bonded to the elastic sound-absorbing plate 10, and the glue block 20 adjacent to the heat insulation plate 11 is bonded to the heat insulation plate 11. Please refer to Figure 6 Two adjacent recessed frames 15 are bonded together using adhesive blocks 20, and two adjacent recessed frames 15 are bonded together using right-angle blocks 19. Furthermore, the top corner post 12 is bonded to the recessed frame 15, and the bottom side frame 14 is bonded to the recessed frame 15 using adhesive. The bottom side frame 14 is integrally formed with two beveled ends 22. These two beveled ends 22 are respectively located in the same plane as the two negative Poisson's ratio side frames 13, and right-angled grooves 23 are provided on the beveled ends 22 to accommodate the right-angle blocks 19.

[0038] This invention employs an adhesive method to assemble the exoskeleton frame 8. Because the bottom frame 14 bends towards the top corner post 12, the exoskeleton frame 8 has an arrowhead-shaped negative Poisson's ratio structure. When subjected to longitudinal load, it undergoes longitudinal contraction, resulting in good longitudinal energy absorption and excellent resistance to longitudinal impact, thus reducing the mutual compression of the exoskeleton frames 8 during longitudinal stacking. When the exoskeleton frame 8 undergoes longitudinal contraction, its internal cavity volume decreases, which can confine the sound-absorbing cotton 9 within a compact space, preventing gaps between the sound-absorbing cotton 9 and the exoskeleton frame 8, thereby improving the sound absorption and noise reduction effect.

[0039] The concave frame 15 has a concave fourteen-sided negative Poisson's ratio structure, which further improves the energy absorption effect of the exoskeleton frame 8 in the longitudinal direction. When it is subjected to lateral impact, it has a good lateral energy absorption effect and excellent resistance to lateral impact. It can protect the front of the triangular module 6 and prevent the sound-absorbing cotton 9 from shrinking due to lateral impact.

[0040] This invention utilizes the framework constraint of a triangular frame 7 to combine four exoskeleton frames 8 into a three-dimensional structure with negative Poisson's ratio effects in both the lateral and longitudinal directions. The exoskeleton frame 8 in this invention employs a hollow design and features a negative Poisson's grid structure, resulting in lightweight and impact-resistant properties. Compared to traditional negative Poisson's ratio material structures, the exoskeleton frame 8 in this invention is simple to assemble and simultaneously constrains the sound-absorbing cotton 9 in the longitudinal direction and protects it in the lateral direction. The recessed frame 15 can be prepared by cutting the bottom frame 14; the cut left after cutting the bottom frame 14 forms the light-reducing groove 16. During transportation, the recessed frame 15 can be placed within the light-reducing groove 16, while the top corner post 12 and the adhesive block 20 can be placed below the folded corner of the bottom frame 14, saving transportation space.

[0041] This invention uses an elastic sound-absorbing panel 10 and sound-absorbing cotton 9 to achieve sound absorption and noise reduction. After passing through the elastic sound-absorbing panel 10, noise will enter the sound-absorbing cotton 9 or move along the noise reduction groove 16. Compared with the traditional negative Poisson's ratio material structure, the noise reduction groove 16 has a complex path inside, which can reflect sound waves to dissipate sound wave energy, resulting in a significant noise reduction effect.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and material-reducing prefabricated building wall, characterized in that: It includes a front wall panel (1), a square frame (2) and a back wall panel (3) connected sequentially in the front-back direction; the inner wall of the square frame (2) is fixedly provided with an inner support frame (4), the inner support frame (4) divides the interior of the square frame (2) into several triangular cavities (5), the triangular cavity (5) is fixedly provided with a triangular module (6), the triangular module (6) includes a triangular frame (7), an exoskeleton frame (8) provided in the triangular frame (7), sound-absorbing cotton (9) filled in the exoskeleton frame (8), an elastic sound-absorbing plate (10) fixedly provided in front of the sound-absorbing cotton (9), and a heat insulation plate (11) fixedly provided in rear of the sound-absorbing cotton (9); The exoskeleton frame (8) includes a top corner post (12), two negative Poisson's ratio side frames (13) fixedly connected to two adjacent side walls of the top corner post (12), and a bottom side frame (14) fixedly connected to the ends of the two negative Poisson's ratio side frames (13) away from the top corner post (12) and bent toward the top corner post (12); the negative Poisson's ratio side frame (13) includes a concave frame (15), and the side wall of the bottom side frame (14) facing the top corner post (12) and the side wall of the bottom side frame (14) facing away from the top corner post (12) are provided with a lightening groove (16) that matches the concave frame (15).

2. The energy-saving subtractive type fabricated building wall body according to claim 1, characterized in that: The triangular cavity (5), the triangular module (6) and the triangular frame (7) are all isosceles right triangle structures, and the inner support frame (4) is an X-shaped structure; The triangular cavity (5) is provided with four triangular modules (6), wherein the right-angle vertices of three of the triangular modules (6) are located at the midpoints of the three sides of the triangular cavity (5), and the right-angle vertex of the remaining triangular module (6) is located at the right-angle vertex of the triangular cavity (5); The triangular frame (7) contains four exoskeleton frames (8), three of which have right-angle vertices located at the midpoints of the three sides of the triangular frame (7), and the remaining exoskeleton frame (8) has a right-angle vertex located at the right-angle vertex of the triangular frame (7).

3. The energy-saving subtractive type fabricated building wall body according to claim 2, characterized in that: Both the elastic sound-absorbing panel (10) and the heat insulation panel (11) are isosceles triangular structures. The front side wall of the back wall panel (3) is fixedly embedded with three mounting rings (24). The three mounting rings (24) are distributed in concentric circles. The center of gravity of the heat insulation panel (11) is fixedly connected to the mounting rings (24) by bolts.

4. The energy-saving subtractive type fabricated building wall body according to claim 2, characterized in that: The top corner post (12) is a quadrangular prism structure, and the bottom frame (14) bends at an angle of 160°-170° toward the top corner post (12).

5. The energy-saving subtractive type fabricated building wall body according to claim 1, characterized in that: The negative Poisson's ratio side frame (13) is provided with four recessed frames (15), which are connected in a 2×2 matrix. Each recessed frame (15) includes two W-shaped frames (17) arranged in a front-to-back mirror symmetry, two V-shaped frames (18) arranged in a top-to-bottom mirror symmetry, and a right-angle block (19) connecting the W-shaped frames (17) and the V-shaped frames (18).

6. The energy-saving subtractive type fabricated building wall body according to claim 5, characterized in that: A glue block (20) is fixedly connected to the right-angled side away from the V-shaped frame (18) on the right-angled block (19). A flat end (21) is integrally formed in the middle of the opposite end faces of the two W-shaped frames (17). The end face away from the W-shaped frame (17) on the glue block (20) is in the same vertical plane as the flat end (21). The glue block (20) adjacent to the elastic sound-absorbing plate (10) is bonded to the elastic sound-absorbing plate (10). The glue block (20) adjacent to the heat insulation plate (11) is bonded to the heat insulation plate (11).

7. The energy-saving subtractive type fabricated building wall body according to claim 5, characterized in that: The bottom frame (14) is integrally formed with two inclined ends (22). The two inclined ends (22) are respectively in the same plane as the two negative Poisson's ratio side frames (13), and the inclined ends (22) are provided with right-angled grooves (23) to accommodate the right-angled block (19).

8. The energy-saving and material-reducing prefabricated building wall according to claim 1, characterized in that: Both the front wall panel (1) and the back wall panel (3) are wood core boards. The front side wall of the front wall panel (1) is coated with a nano silver coating, and the rear side wall of the back wall panel (3) is coated with a waterproof coating.

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